NETSCAPE COMMUNICATIONS CORP
424A, 1996-10-31
PREPACKAGED SOFTWARE
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<PAGE>
Information   contained  herein  is  subject   to  completion  or  amendment.  A
registration statement  relating to  these securities  has been  filed with  the
Securities  and Exchange  Commission. These securities  may not be  sold nor may
offers to buy be accepted prior  to the time the registration statement  becomes
effective.  This  prospectus  shall  not  constitute an  offer  to  sell  or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in  any State in which such offer,  solicitation or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.
<PAGE>
   
                                                   FILED PURSUANT TO RULE 424(a)
                                                      REGISTRATION NO. 333-15135
    
 PROSPECTUS (SUBJECT TO COMPLETION)
 ISSUED OCTOBER 30, 1996
                                5,000,000 SHARES
 
                                     [LOGO]
 
                                  COMMON STOCK
                               -----------------
   
 OF THE 5,000,000  SHARES OF  COMMON STOCK  BEING OFFERED,  750,000 SHARES  ARE
 BEING  OFFERED  INITIALLY OUTSIDE  OF THE  UNITED STATES  AND CANADA  BY THE
   INTERNATIONAL  UNDERWRITERS  AND  4,250,000   SHARES  ARE  BEING   OFFERED
   INITIALLY   INSIDE  OF  THE  UNITED  STATES   AND  CANADA  BY  THE  U.S.
     UNDERWRITERS. SEE "UNDERWRITERS."  OF THE 5,000,000  SHARES OF  COMMON
     STOCK  BEING OFFERED, 2,000,000  SHARES ARE BEING  SOLD BY THE COMPANY
     AND 3,000,000 SHARES ARE BEING SOLD BY THE SELLING STOCKHOLDERS. SEE
       "PRINCIPAL AND SELLING STOCKHOLDERS." THE COMPANY WILL NOT RECEIVE
       ANY OF  THE PROCEEDS  FROM  THE SALE  OF  SHARES BY  THE  SELLING
        STOCKHOLDERS. THE COMPANY'S COMMON STOCK IS LISTED ON THE NASDAQ
        NATIONAL  MARKET UNDER THE SYMBOL  "NSCP." ON OCTOBER 30, 1996,
         THE REPORTED LAST SALE PRICE  OF THE COMMON STOCK  ON     THE
          NASDAQ  NATIONAL MARKET  WAS $46  1/8 PER  SHARE. SEE "PRICE
                            RANGE OF COMMON STOCK."
    
                            ------------------------
 
        THIS OFFERING INVOLVES A HIGH DEGREE OF RISK. SEE "RISK FACTORS"
                          COMMENCING ON PAGE 5 HEREOF.
                              -------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED  OR DISAPPROVED BY THE SECURITIES  AND
  EXCHANGE  COMMISSION  OR  ANY  STATE SECURITIES  COMMISSION  NOR  HAS THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
       PASSED UPON THE  ACCURACY OR ADEQUACY  OF THIS PROSPECTUS.  ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                              -------------------
 
                              PRICE $      A SHARE
                              -------------------
 
<TABLE>
<CAPTION>
                                                     UNDERWRITING                               PROCEEDS TO
                                  PRICE TO           DISCOUNTS AND         PROCEEDS TO            SELLING
                                   PUBLIC           COMMISSIONS(1)         COMPANY(2)          STOCKHOLDERS
                             -------------------  -------------------  -------------------  -------------------
<S>                          <C>                  <C>                  <C>                  <C>
PER SHARE..................           $                    $                    $                    $
TOTAL(3)...................           $                    $                    $                    $
</TABLE>
 
- ------------
   (1)  THE  COMPANY AND THE  SELLING STOCKHOLDERS HAVE  AGREED TO INDEMNIFY THE
        UNDERWRITERS AGAINST  CERTAIN LIABILITIES,  INCLUDING LIABILITIES  UNDER
        THE SECURITIES ACT OF 1933, AS AMENDED. SEE "UNDERWRITERS."
 
   (2)  BEFORE DEDUCTING EXPENSES PAYABLE BY THE COMPANY ESTIMATED AT $900,000.
 
   (3)  THE  COMPANY HAS GRANTED TO THE U.S. UNDERWRITERS AN OPTION, EXERCISABLE
        WITHIN 30 DAYS OF  THE DATE HEREOF,  TO PURCHASE UP  TO AN AGGREGATE  OF
        750,000  ADDITIONAL  SHARES AT  THE  PRICE TO  PUBLIC  LESS UNDERWRITING
        DISCOUNTS AND COMMISSIONS FOR  THE PURPOSE OF COVERING  OVER-ALLOTMENTS,
        IF ANY. IF THE U.S. UNDERWRITERS EXERCISE SUCH OPTION IN FULL, THE TOTAL
        PRICE  TO PUBLIC, UNDERWRITING DISCOUNTS AND COMMISSIONS AND PROCEEDS TO
        COMPANY WILL BE $           , $         AND  $          ,  RESPECTIVELY.
        SEE "UNDERWRITERS."
                            ------------------------
 
    THE  SHARES ARE OFFERED, SUBJECT TO PRIOR  SALE, WHEN, AS AND IF ACCEPTED BY
THE UNDERWRITERS NAMED HEREIN AND SUBJECT  TO APPROVAL OF CERTAIN LEGAL  MATTERS
BY  GRAY CARY  WARE & FREIDENRICH,  A PROFESSIONAL CORPORATION,  COUNSEL FOR THE
UNDERWRITERS. IT IS  EXPECTED THAT DELIVERY  OF THE  SHARES WILL BE  MADE ON  OR
ABOUT             , 1996 AT THE OFFICE OF MORGAN STANLEY & CO. INCORPORATED, NEW
YORK, N.Y., AGAINST PAYMENT THEREFOR IN IMMEDIATELY AVAILABLE FUNDS.
                              -------------------
 
MORGAN STANLEY & CO.
       INTERNATIONAL
 
                    DEUTSCHE MORGAN GRENFELL
 
                                 GOLDMAN SACHS INTERNATIONAL

                                                               HAMBRECHT & QUIST
 
            , 1996
<PAGE>
    NO  PERSON IS AUTHORIZED IN CONNECTION WITH ANY OFFERING MADE HEREBY TO GIVE
ANY INFORMATION  OR  TO MAKE  ANY  REPRESENTATION  OTHER THAN  AS  CONTAINED  OR
INCORPORATED  BY  REFERENCE  IN THIS  PROSPECTUS,  AND  IF GIVEN  OR  MADE, SUCH
INFORMATION MUST NOT BE  RELIED UPON AS HAVING  BEEN AUTHORIZED BY THE  COMPANY,
ANY  SELLING STOCKHOLDER OR ANY UNDERWRITER. THIS PROSPECTUS DOES NOT CONSTITUTE
AN OFFER TO  SELL OR A  SOLICITATION OF  AN OFFER TO  BUY BY ANY  PERSON IN  ANY
JURISDICTION IN WHICH IT IS UNLAWFUL FOR SUCH PERSON TO MAKE SUCH AN OFFERING OR
SOLICITATION.  NEITHER THE DELIVERY OF THIS PROSPECTUS  AT ANY TIME NOR ANY SALE
MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCE IMPLY THAT THE INFORMATION HEREIN IS
CORRECT AS OF ANY DATE SUBSEQUENT TO THE DATE HEREOF.
                             ---------------------
 
    NO ACTION HAS BEEN OR WILL BE TAKEN IN ANY JURISDICTION BY THE COMPANY,  ANY
SELLING  STOCKHOLDER OR BY AN UNDERWRITER THAT WOULD PERMIT A PUBLIC OFFERING OF
THE COMMON  STOCK  OR POSSESSION  OR  DISTRIBUTION  OF THIS  PROSPECTUS  IN  ANY
JURISDICTION WHERE ACTION FOR THAT PURPOSE IS REQUIRED, OTHER THAN IN THE UNITED
STATES.  PERSONS INTO WHOSE POSSESSION THIS PROSPECTUS COMES ARE REQUIRED BY THE
COMPANY AND THE  UNDERWRITERS TO  INFORM THEMSELVES  ABOUT, AND  TO OBSERVE  ANY
RESTRICTIONS  AS TO, THE  OFFERING OF THE  COMMON STOCK AND  THE DISTRIBUTION OF
THIS PROSPECTUS.
                             ---------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                                                                      PAGE
                                                                                                                      -----
<S>                                                                                                                <C>
Incorporation of Certain Documents by Reference..................................................................           2
Prospectus Summary...............................................................................................           3
The Company......................................................................................................           4
Risk Factors.....................................................................................................           5
Use of Proceeds..................................................................................................          20
Price Range of Common Stock......................................................................................          20
Dividend Policy..................................................................................................          20
Capitalization...................................................................................................          21
Dilution.........................................................................................................          22
Selected Supplemental Consolidated Financial Data................................................................          23
Business.........................................................................................................          24
Management.......................................................................................................          30
Principal and Selling Stockholders...............................................................................          33
Certain United States Federal Tax Considerations for Non-U.S. Holders of Common Stock............................          35
Underwriters.....................................................................................................          37
Legal Matters....................................................................................................          40
Experts..........................................................................................................          40
Available Information............................................................................................          40
Glossary of Terms................................................................................................          42
</TABLE>
    
 
                              -------------------
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The following  documents  filed  by  the Company  with  the  Securities  and
Exchange  Commission (the "Commission") pursuant  to the Securities Exchange Act
of 1934, as amended (the "Exchange  Act") are incorporated herein by  reference:
(1)  the Company's Annual  Report on Form  10-K for the  year ended December 31,
1995, as amended by the Company's Annual  Report on Form 10-K/A Amendment No.  1
filed  on May  7, 1996  and as amended  by the  Company's Annual  Report on Form
10-K/A Amendment No. 2  filed on October 30,  1996; (2) the Company's  Quarterly
Report  on Form  10-Q for the  quarter ended  March 31, 1996;  (3) the Company's
Current Report on Form  8-K dated April  25, 1996, as  amended by the  Company's
Current  Report on Form 8-K/A filed on July 8, 1996; (4) the Company's Quarterly
Report on Form  10-Q for  the quarter  ended June  30, 1996;  (5) the  Company's
Quarterly  Report on Form 10-Q for the quarter ended September 30, 1996; and (6)
the description  of  the  Company's  Common Stock  contained  in  the  Company's
Registration  Statement on Form  8-A filed on  June 23, 1995,  as amended by the
Company's Registration Statement on Form 8-A/A filed on August 4, 1995.
 
    All reports and  other documents filed  by the Company  pursuant to  Section
13(a),  13(c), 14 or  15(d) of the Exchange  Act subsequent to  the date of this
Prospectus and prior  to the  termination of the  offering of  the Common  Stock
hereunder  shall be deemed  to be incorporated  by reference herein  and to be a
part hereof from the date of filing  of such reports and documents. The  Company
will  provide  without  charge,  to  each  person  to  whom  this  Prospectus is
delivered, a copy of any or all of such documents (exclusive of exhibits  unless
such  exhibits are specifically incorporated  by reference herein), upon written
or oral request to Investor Relations, Netscape Communications Corporation,  501
East   Middlefield  Road,  Mountain  View,  California  94043,  telephone  (415)
937-9360.
 
    Any  statement  contained  in  a  document  incorporated  or  deemed  to  be
incorporated  by reference herein  shall be deemed to  be modified or superseded
for purposes of this Prospectus to the extent that a statement contained  herein
or  in any  other subsequently filed  document that also  is or is  deemed to be
incorporated by  reference herein  modifies or  supersedes such  statement.  Any
statement  so modified or superseded shall not  be deemed, except as so modified
or superseded, to constitute a part of this Prospectus.
                             ---------------------
 
    Netscape Navigator-Registered Trademark-  is a registered  trademark of  the
Company.  AppFoundry-TM-, LiveWire-TM-,  Netscape ONE-TM-  and SuiteSpot-TM- are
trademarks of the Company.  All other trademarks or  trade names referred to  in
this Prospectus are the property of their respective owners.
                             ---------------------
 
    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK OF
THE COMPANY AT  A LEVEL ABOVE  THAT WHICH  MIGHT OTHERWISE PREVAIL  IN THE  OPEN
MARKET. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
    IN  CONNECTION WITH  THIS OFFERING,  CERTAIN UNDERWRITERS  AND OTHER SELLING
GROUP MEMBERS (IF  ANY) OR  THEIR RESPECTIVE  AFFILIATES MAY  ENGAGE IN  PASSIVE
MARKET  MAKING TRANSACTIONS  IN THE  COMMON STOCK OF  THE COMPANY  ON THE NASDAQ
NATIONAL MARKET  IN ACCORDANCE  WITH RULE  10B-6A UNDER  THE EXCHANGE  ACT.  SEE
"UNDERWRITERS."
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
    THE  FOLLOWING SUMMARY  IS QUALIFIED  IN ITS  ENTIRETY BY  THE MORE DETAILED
INFORMATION  AND  THE  CONSOLIDATED  FINANCIAL  STATEMENTS  AND  NOTES   THERETO
APPEARING ELSEWHERE OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS.
 
                                  THE COMPANY
 
    Netscape  Communications  Corporation  ("Netscape" or  the  "Company")  is a
leading provider  of  open software  for  linking people  and  information  over
private   TCP/IP-based  enterprise  networks  ("intranets")  and  the  Internet.
Netscape develops, markets and supports a  broad suite of enterprise server  and
client  software,  development tools  and  commercial applications  to  create a
single shared communications platform  for network-based applications.  Netscape
software  is based on industry standard  protocols and therefore can be deployed
across a variety of computer operating systems, hardware platforms and databases
and can  be interconnected  with traditional  client/server applications.  Using
Netscape  solutions, organizations can extend their internal information systems
and applications  to geographically  dispersed facilities  as well  as to  third
party partners and customers. In addition, Netscape's products allow individuals
and  organizations to access information and  to execute transactions across the
Internet, such as the buying  and selling of information, software,  merchandise
and publications.
 
   
    Netscape  released its first product, Navigator 1.0, in December 1994, which
offered an easy to use graphical user interface for browsing the World Wide  Web
(the  "Web"). Since  that time, the  Company has become  increasingly focused on
offering user and network services  for use in intranet applications,  including
features with e-mail and graphics. The Company currently offers a broad suite of
software  products and tools, targeted primarily at corporate intranets, for use
in a variety  of information sharing,  network management and  commerce-enabling
applications. 92 of the Fortune 100 companies use Netscape products for intranet
or Internet solutions.
    
 
                                  THE OFFERING
 
   
<TABLE>
<S>                                                        <C>
U.S. Offering............................................  4,250,000 shares
International Offering...................................  750,000 shares
  Total..................................................  5,000,000 shares (including 2,000,000 shares sold by the
                                                            Company and 3,000,000 shares sold by the Selling
                                                           Stockholders)
Common Stock to be outstanding after the offering........  86,535,395 shares (1)
Use of proceeds..........................................  For general corporate purposes, including working capital
                                                           and capital expenditures
Nasdaq National Market symbol............................  NSCP
</TABLE>
    
 
            SUPPLEMENTAL SUMMARY CONSOLIDATED FINANCIAL INFORMATION
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                                     QUARTER ENDED
                                                       --------------------------------------------------------------------------
                                                        MARCH 31,   JUNE 30,    SEPT. 30,    DEC. 31,     MARCH 31,    JUNE 30,
                                                         1995(2)     1995(2)     1995(2)      1995(2)      1996(3)      1996(3)
                                                       -----------  ---------  -----------  -----------  -----------  -----------
<S>                                                    <C>          <C>        <C>          <C>          <C>          <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Total revenues.......................................   $   6,445   $  14,072   $  23,308    $  41,562    $  56,121    $  75,006
Gross profit.........................................       5,814      12,753      20,289       34,824       47,627       62,978
Merger related charges...............................      --          --          --            2,033       --            6,100
Total operating expenses.............................      10,412      15,941      21,470       36,566       45,137       62,450
Operating income (loss)..............................      (4,598)     (3,188)     (1,181)      (1,742)       2,490          528
Net income (loss)....................................      (4,507)     (2,792)        175          511        3,589          906
Net income (loss) per share..........................   $   (0.07)  $   (0.04)  $    0.00    $    0.01    $    0.04    $    0.01
 
<CAPTION>
 
                                                       SEPT. 30,
                                                        1996(3)
                                                       ---------
<S>                                                    <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Total revenues.......................................  $ 100,016
Gross profit.........................................     85,322
Merger related charges...............................     --
Total operating expenses.............................     76,362
Operating income (loss)..............................      8,960
Net income (loss)....................................      7,657
Net income (loss) per share..........................  $    0.09
</TABLE>
 
   
<TABLE>
<CAPTION>
                                                            SEPTEMBER 30, 1996
                                                         ------------------------
                                                                         AS
                                                         ACTUAL(3) ADJUSTED(3)(4)
                                                         --------  --------------
<S>                                                      <C>       <C>
CONSOLIDATED BALANCE SHEET DATA:
Working capital........................................  $70,571      $158,047
Total assets...........................................  331,748      419,234
Deferred revenues......................................   75,126       75,126
Long-term obligations, net of current portion..........      659          659
Stockholders' equity...................................  199,004      286,480
</TABLE>
    
 
- ------------
(1) Based on shares of Common Stock outstanding at September 30, 1996. Excludes,
    as  of September 30,  1996, (i) an  aggregate of 8,301,650  shares of Common
    Stock subject to outstanding options under the Company's stock option  plans
    at  a  weighted average  exercise price  of $22.83  per share  and 3,257,663
    shares reserved for future grants  of options thereunder and (ii)  1,723,494
    shares  of  Common  Stock reserved  but  unissued under  the  Company's 1995
    Employee Stock Purchase Plan. Assumes no exercise of the U.S.  Underwriters'
    over-allotment option. See "Capitalization" and "Underwriters."
 
(2)  Reflects the business  combinations of Collabra  Software, Inc. and InSoft,
    Inc. which  have been  accounted  for as  poolings of  interests.  Financial
    information  has not been restated for the operations of Netcode Corporation
    and Paper Software, Inc. due to immateriality.
 
   
(3) Reflects the  business combinations  with Collabra  Software, Inc.,  InSoft,
    Inc., Netcode Corporation and Paper Software, Inc. which have been accounted
    for as poolings of interests.
    
 
(4)  Adjusted  to  reflect  the sale  of  the  shares of  Common  Stock  and the
    application of the estimated net proceeds therefrom. Assumes no exercise  of
    the  U.S.  Underwriters'  over-allotment  option.  See  "Use  of  Proceeds,"
    "Capitalization" and "Underwriters."
 
                                       3
<PAGE>
                                  THE COMPANY
 
    Netscape  Communications  Corporation  ("Netscape" or  the  "Company")  is a
leading provider  of  open software  for  linking people  and  information  over
private   TCP/IP-based  enterprise  networks  ("intranets")  and  the  Internet.
Netscape develops, markets and supports a  broad suite of enterprise server  and
client  software,  development tools  and  commercial applications  to  create a
single shared communications platform  for network-based applications.  Netscape
software  is based on industry standard  protocols and therefore can be deployed
across a variety of computer operating systems, hardware platforms and databases
and can  be interconnected  with traditional  client/server applications.  Using
Netscape  solutions, organizations can extend their internal information systems
and applications  to geographically  dispersed facilities  as well  as to  third
party partners and customers. In addition, Netscape's products allow individuals
and  organizations to access information and  to execute transactions across the
Internet such as the  buying and selling  of information, software,  merchandise
and publications.
 
   
    Netscape  released its first product, Navigator 1.0, in December 1994, which
offered an easy to use graphical user interface for browsing the World Wide  Web
(the  "Web"). Since  that time, the  Company has become  increasingly focused on
offering user and network services  for use in intranet applications,  including
features with e-mail and graphics. The Company currently offers a broad suite of
software  products and tools, targeted primarily at corporate intranets, for use
in a variety  of information sharing,  network management and  commerce-enabling
applications. 92 of the Fortune 100 companies use Netscape products for intranet
or Internet solutions.
    
 
   
    To  reach a diverse and worldwide customer base, Netscape delivers its suite
of products and  services through  multiple distribution  channels. The  Company
offers  its products via  a direct sales  force, telesales, and  the Internet as
well as through  resellers such  as original  equipment manufacturers  ("OEMs"),
systems  integrators, value  added resellers (together  with systems integrators
referred  to   herein  as   "VARs")   and  software   retailers   (collectively,
"Resellers").  To accelerate the acceptance  of the Company's products, Netscape
has  entered  into  reseller  agreements  with  leading  telecommunications  and
technology  companies  with  complementary resources.  These  companies include,
among others,  AT&T  Corp.  ("AT&T"), Apple  Computer,  Inc.  ("Apple"),  Compaq
Computer Corporation ("Compaq"), Deutsche Telekom, Digital Equipment Corporation
("Digital"),   France  Telecom,   Hewlett-Packard  Company  ("Hewlett-Packard"),
International Business  Machines Corporation  ("IBM"), Informix  Software,  Inc.
("Informix"),  Novell, Inc.  ("Novell"), Olivetti  SPA ("Olivetti"),  Siemens AG
("Siemens"),  Silicon  Graphics,   Inc.  ("Silicon   Graphics"),  Sybase,   Inc.
("Sybase") and Sun Microsystems, Inc. ("Sun").
    
 
    In  October  1996, the  Company announced  a matched  server/client solution
focused on the intranet  market as an  upgrade and extension  of its server  and
client  products. Netscape SuiteSpot  3.0, an upgrade  to Netscape SuiteSpot 2.0
which is planned  to be commercially  available in  the first half  of 1997,  is
designed  to  be an  integrated suite  of server  software that  offers advanced
messaging and  groupware  functionality, provides  an  open foundation  for  the
creation  of network-based applications and enables flexible content management.
Netscape Communicator 4.0, an upgrade to Netscape Navigator which is planned  to
be  commercially  available in  the  first half  of 1997,  is  designed to  be a
componentized suite of  client software for  open HTML-based e-mail,  groupware,
authoring,  calendaring and Web  browsing. Together, the  Netscape SuiteSpot 3.0
and Communicator 4.0 solution are designed  to offer a matched feature  approach
enabling   organizations  to   use  e-mail,   groupware  and   other  enterprise
applications across an open network.
 
    Netscape was incorporated in  Delaware in April  1994. Netscape's home  page
can  be located on the Web  at http://home.netscape.com. The Company's principal
executive office  is  located  at  501 East  Middlefield  Road,  Mountain  View,
California  94043, and its telephone number  at this location is (415) 254-1900.
Netscape's common stock is traded on the Nasdaq National Market under the symbol
"NSCP." Except as otherwise  noted herein, all references  to "Netscape" or  the
"Company" shall mean Netscape Communications Corporation and its subsidiaries.
 
                                       4
<PAGE>
                                  RISK FACTORS
 
   
    IN ADDITION TO THE OTHER INFORMATION IN THIS PROSPECTUS AND IN THE DOCUMENTS
INCORPORATED BY REFERENCE HEREIN, THE FOLLOWING RISK FACTORS SHOULD BE CAREFULLY
CONSIDERED  IN EVALUATING  THE COMPANY  AND ITS  BUSINESS BEFORE  PURCHASING THE
COMMON STOCK OFFERED BY THIS PROSPECTUS. THE SECTION ENTITLED  "BUSINESS--RECENT
DEVELOPMENTS--PLANNED   PRODUCTS  AND  RELEASES"  IN  THIS  PROSPECTUS  CONTAINS
FORWARD-LOOKING STATEMENTS WITHIN THE MEANING  OF SECTION 27A OF THE  SECURITIES
ACT  OF 1933  AND SECTION  21E OF  THE SECURITIES  EXCHANGE ACT  OF 1934. ACTUAL
RESULTS COULD  DIFFER MATERIALLY  FROM THOSE  PROJECTED IN  THE  FORWARD-LOOKING
STATEMENTS  AS  A  RESULT OF  THE  RISK  FACTORS, SPECIFICALLY  THE  RISK FACTOR
ENTITLED "NEW PRODUCT DEVELOPMENT AND TECHNOLOGICAL CHANGE," SET FORTH BELOW AND
ELSEWHERE IN THIS PROSPECTUS.
    
 
POTENTIAL FLUCTUATIONS IN QUARTERLY RESULTS
 
    As a result of the Company's relatively limited operating history and recent
acquisitions, the Company does not have relevant historical financial data for a
significant number  of periods  on  which to  base planned  operating  expenses.
Accordingly,  the Company's expense  levels, which are to  a large extent fixed,
are based in part on  its expectations as to  future revenues. In addition,  the
Company  typically operates with minimal backlog, therefore, quarterly sales and
operating results generally depend  on the volume and  timing of and ability  to
fulfill orders received within the quarter, which are difficult to forecast. The
Company  typically recognizes a substantial portion  of its revenues in the last
month of each quarter. Accordingly, the Company may be unable to adjust spending
in a timely  manner to  compensate for any  unexpected revenue  shortfall. As  a
result,  any  significant shortfall  of demand  for  the Company's  products and
services in  relation to  the  Company's expectations  would have  an  immediate
material  adverse  impact  on  the  Company's  business,  operating  results and
financial condition. Further,  as the  Company becomes  increasingly focused  on
sales  to enterprise  customers, the  Company expects  that a  limited number of
large sales may account for a  significant portion of revenue in some  quarters,
resulting  in fluctuations in revenue in  future periods and adversely impacting
operating results  in periods  of  lower than  expected revenue.  Moreover,  the
Company (i) plans to continue to increase its operating expenses to fund greater
levels of research and development, increase its sales and marketing operations,
develop new distribution channels, improve its operational and financial systems
and  broaden its  customer support capabilities  and (ii) may  continue to incur
significant merger-related  charges and  other increases  in operating  expenses
associated  with recently completed  and any future  acquisitions. To the extent
that such  expenses  precede  or  are not  subsequently  followed  by  increased
revenues, the Company's business, operating results and financial condition will
be materially adversely affected.
 
    The  Company  expects  to  experience  significant  fluctuations  in  future
quarterly operating results that may be caused by many factors, including demand
for the  Company's products,  introduction  or enhancement  of products  by  the
Company  and its competitors,  market acceptance of new  products, the timing of
large sales  (particularly to  enterprise customers),  price reductions  by  the
Company  (such as those made in October 1995 and March 1996) or its competitors,
changes in how  products are priced  (such as  the change in  client and  server
pricing  announced in  October 1996), the  mix of  distribution channels through
which products are  sold, the  mix of  products and  services sold,  the mix  of
international  and North American  revenues, costs of  litigation, lengthy sales
cycles and general economic  conditions. In particular,  as the Company  becomes
increasingly  focused on sales to enterprise customers the Company believes that
quarterly operating results may  fluctuate due to the  timing of revenue from  a
limited  number of large sales. In addition,  as a strategic response to changes
in the competitive environment, the Company  may from time to time make  certain
pricing  or marketing decisions (such as the recently announced change in client
and server pricing)  or business  combinations (such as  the Collabra  Software,
Inc.  ("Collabra"), InSoft, Inc. ("InSoft"), Netcode Corporation ("Netcode") and
Paper Software, Inc. ("Paper Software") business combinations) that could have a
material adverse  effect on  the Company's  business, results  of operations  or
financial  condition. As  a result,  the Company  believes that period-to-period
comparisons of  its results  of operations  are not  necessarily meaningful  and
should  not be relied upon  as any indication of  future performance. Because of
all of the  foregoing factors, it  is likely  that in some  future quarters  the
Company's operating
 
                                       5
<PAGE>
results  will be below the expectations of public market analysts and investors.
In such  event,  the  price  of  the Company's  common  stock  would  likely  be
materially  adversely  affected. See  "Management's  Discussion and  Analysis of
Financial Condition  and  Results  of  Operations"  in  each  of  the  Company's
Quarterly  Report on  Form 10-Q  for the quarter  ended September  30, 1996 (the
"Third Quarter  10-Q")  and 1995  Annual  Report to  Stockholders  (the  "Annual
Report").
 
COMPETITION
 
    The  market  for software  and services  for intranets  and the  Internet is
relatively new, intensely  competitive, rapidly  evolving and  subject to  rapid
technological  change. The Company expects competition to persist, intensify and
increase in the future. Many of the Company's current and potential  competitors
have   longer  operating   histories,  larger   installed  customer   bases  and
significantly greater  financial,  technical, marketing,  public  relations  and
distribution  resources  than  the Company.  Such  competition  could materially
adversely  affect  the  Company's  business,  operating  results  or   financial
condition.  The Company's current and potential  competitors can be divided into
several groups:  Microsoft Corporation  ("Microsoft"), Web  server software  and
service vendors, browser software vendors, and other operating system vendors.
 
    In  particular  the market  for intranet  software  is rapidly  evolving and
increasingly competitive. The  Company's intranet solution  of SuiteSpot  server
software  and Netscape Navigator  client software has  recently been upgraded to
include more robust e-mail features.  The Company's intranet solution  currently
competes   with  Lotus  Development  Corporation's  ("Lotus")  Lotus  Notes  and
Microsoft  Exchange,  both  of  which   offer  electronic  mail  and   groupware
capability.  In addition, Oracle has announced  its intention to compete in this
market through its InterOffice  products. Lotus, Microsoft  and Oracle all  have
significantly  greater  financial,  technical,  marketing  and  public relations
resources, larger installed customer bases, greater distribution capability  and
significantly greater experience in selling to enterprises than the Company.
 
    MICROSOFT.   Microsoft is devoting a  significant portion of its substantial
resources to  developing,  marketing  and  distributing  Internet  and  intranet
software  and services in an attempt to gain market share. Microsoft has bundled
its own browser with its Windows 95 operating system, allows it to be downloaded
for free over the Internet and offers  it as a free product to distributors  and
end-users,  including  distributors  and end-users  of  the  Company's products.
Microsoft recently introduced  a new version  of this browser  that has  similar
features  and functionality to  the browser features  of Netscape Navigator 3.0,
and this  new version  will  likely reduce  Netscape Navigator's  market  share.
Microsoft  has  also  announced that  future  versions of  its  Microsoft Office
Applications suite will offer enhanced Internet and intranet capability that may
be dependent  upon certain  functionality of  Microsoft's browser.  Further,  in
August  1996, Microsoft shipped  Version 2.0 of  its Internet Information Server
("IIS") that is bundled  with Microsoft's Windows  NT Advanced Server  operating
system  at  no  additional  cost,  which may  cause  further  price  pressure on
Netscape's server products and may reduce Netscape's market share. Microsoft has
also been  adding  Internet and  intranet  capability  to its  range  of  server
software offered on the Windows NT operating system. Microsoft is bundling a Web
authoring tool for free with its NT Server and recently introduced a server that
will  compete with Netscape Proxy Server. Further, Microsoft is expected to soon
begin  offering  products   in  the  commercial   applications  software   area,
particularly  products competitive  to Netscape  Merchant System.  In June 1996,
Microsoft announced server products for Internet service providers ("ISPs")  and
content  providers to set up  Web servers and related  services. In the intranet
software market, Microsoft  has recently begun  offering Microsoft Exchange,  an
e-mail  and groupware product that operates in conjunction with Microsoft's Back
Office and  browser  products. Microsoft  also  recently announced  its  Outlook
product,  which is  intended to  be a  universal browser  for intranets  and the
Internet.
 
    Microsoft's significant focus and product development activity in the market
for  Internet  and  intranet  products  and  services  and  the  penetration  of
Microsoft's  software  into its  installed base  of  PC users  has significantly
increased the competitive pressures on  the Company. Such pressures have  placed
significant  price pressure on the Company and in the future may result in price
reductions in Netscape's products and
 
                                       6
<PAGE>
may also materially reduce Netscape's market share. If this were to occur, sales
of Netscape's products in particular, and Netscape's business, operating results
and financial condition in general, could be materially adversely affected.
 
    The Company  believes that  Microsoft has  attempted to  create  competitive
advantages  for its browser and server  products by bundling these products with
its operating  systems, often  at no  additional cost.  Moreover, Microsoft  has
announced  its intention  to bundle  its browser and  server products  in a more
tightly integrated fashion with its underlying operating systems. If Microsoft's
browser and  server  products  are  more  tightly  integrated  with  Microsoft's
operating  systems, the ability of  Microsoft's competitors, including Netscape,
to obtain effective access  to Microsoft's operating  systems could be  impeded,
particularly  if  such competitors  do  not obtain  the  application programming
interfaces or  other  technical  information  necessary  to  access  Microsoft's
operating  systems in a  timely fashion. Microsoft  may also use  other means of
attempting to restrict access to  its operating systems. For example,  Microsoft
may  assert licensing or  other restrictions which could  restrict the access of
competitors to its operating systems. In particular, Microsoft has asserted that
its Windows NT Workstation operating system is not meant to be used as a  server
operating  system  for a  Web site.  If Microsoft  is successful  in restricting
access to its operating systems, sales of Netscape's products in particular, and
Netscape's business, operating results and financial condition in general, could
be materially adversely affected.
 
    The Company also believes that Microsoft has used, and will continue to use,
its dominant position  in desktop software  to secure preferential  distribution
and bundling contracts with third parties such as ISPs, online service providers
and  VARs, including third  parties with whom the  Company has relationships. In
addition, the  Company  believes that  Microsoft  may promote  technologies  and
standards  with  which  Netscape's  products are  not  compatible.  For example,
Microsoft is promoting its proprietary  ActiveX technology as an alternative  to
the  Java  programming  language  for  Internet  application  software. Although
Netscape has announced that  it will provide native  support for ActiveX on  the
Windows  95 platform in Netscape Communicator 4.0, if Microsoft is successful in
promoting widespread adoption  of its  ActiveX technology as  an alternative  to
Java,  Netscape's business, operating  results and financial  condition could be
materially adversely affected. Similarly, Microsoft is promoting its proprietary
DCOM technology  as  an  alternative to  the  CORBA  and IIOP  standards  for  a
cross-platform,  network-based environment.  The Company has  endorsed the CORBA
and IIOP standards in its products, and if Microsoft is successful in  promoting
widespread  adoption of its  DCOM technology, the  Company's business, operating
results and financial condition could be materially adversely affected.
 
    Microsoft has a longer operating history,  a much larger installed base  and
number of employees and dramatically greater financial, technical, marketing and
public relations resources, access to distribution channels and name recognition
than  the Company,  all of  which are  a significant  competitive advantage. For
example, Microsoft is currently  offering certain of  its Internet and  intranet
products  for free or for no additional charge when bundled with another product
and may eventually offer all of its  Internet and intranet products for free  or
for  no  additional charge  when bundled  with another  product. In  addition to
offering its browser and  server products for free,  Microsoft is also  offering
special  incentives,  such as  free  access to  Web  sites that  would otherwise
require a  subscription fee,  to  users of  its  browser product.  In  addition,
Microsoft  is investing  significantly in  localizing its  Internet and intranet
software in non-English languages, which may be a competitive threat as Netscape
attempts to  expand  its international  business.  As a  result  of all  of  the
foregoing, there can be no assurance that Netscape's business, operating results
and financial condition will not be materially adversely affected.
 
    OTHER  COMPETITION.    In  addition  to  Microsoft,  several  companies  are
currently offering Web server software  products that compete directly with  the
Company's  Web  server  products. Organizations  offering  competing  Web server
products for the  Internet include the  Apache Group ("Apache")  (which has  the
largest  measured  share  of Web  servers  on  the Internet  as  of  July 1996),
Microsoft and  the  National  Center  for  Supercomputing  Applications  at  the
University  of Illinois  ("NCSA"). Unlike  Netscape, which  charges for  its Web
server products for  the Internet, the  Web servers from  Apache, Microsoft  and
NCSA are offered for
 
                                       7
<PAGE>
free.  Companies offering  competing Web  server products  for intranets include
Microsoft, IBM, Oracle  and Novell, among  others. Some of  these companies  are
enhancing  the functionality of their existing products through their Web server
product offerings. In addition to Microsoft's  bundling of IIS with its  Windows
NT Advanced Server, Lotus, a subsidiary of IBM, has developed a Web server based
on  its popular Notes group software  program. Oracle's Web server product works
with its large  installed base of  database software. Companies  that offer  Web
server  and client products that are or can be bundled with operating systems or
databases are particularly  formidable competition  in the  market for  intranet
software.  The  Company  also  expects  competition  from  companies  that offer
products competitive  with  the  Company's commercial  application  products  by
enabling  Web site creation and maintenance and a framework for online commerce.
These companies include Open Market, Inc., BroadVision, Inc., Connect, Inc.  and
Edify  Corporation. In the future, software companies which have server products
in other product categories may choose to enhance the functionality of  existing
products  or develop new  products which are competitive  with the Company's Web
server and commercial applications products.
 
    In addition  to  Microsoft,  several  companies  are  currently  offering  a
client-based  Web  browser that  competes directly  with the  Company's Netscape
Navigator product line. NCSA distributes its product, NCSA Mosaic, for free  for
noncommercial use.
 
    The  Company  believes  that  other  operating  system  vendors  may  become
competitors. Although  IBM  and  Apple  have  each  announced  an  intention  to
incorporate Netscape Navigator client software into their operating systems, IBM
and  Apple are each currently offering competing browsers and may continue to do
so.  In  addition,  IBM  and  Apple   may  also  incorporate  some  Web   server
functionality  into  their  operating  systems  which  would  compete  with  the
Company's Web  server and  commercial applications  products. The  Company  also
expects  Unix  operating systems  vendors,  such as  Sun,  Hewlett-Packard, IBM,
Digital, The Santa Cruz Operation, Inc. ("Santa Cruz") and Silicon Graphics,  to
incorporate  Web client  and server  software into  their operating  systems. If
these companies  incorporate  Web  client or  server  functionality  into  their
software  products  and such  technology  is not  licensed  from Netscape  or is
licensed from Netscape at significantly reduced prices, the Company's  business,
operating   results  and  financial  condition  could  be  materially  adversely
affected.
 
    Additional competition could come from client/server applications and  tools
vendors,   multimedia  companies,  document   management  companies,  networking
software  companies,  network  management  companies  and  educational  software
companies.  Further, the Company's current  products are designed around certain
standards, and industry  acceptance of  competing standards  could decrease  the
demand for the Company's products.
 
    Competitive  factors in  the market for  Internet and  intranet software and
services include core technology, breadth of product features, product  quality,
marketing and distribution resources, pricing, and customer service and support.
Except  as set forth above, the Company believes it presently competes favorably
with respect to each of these  factors. However, the market and competition  are
still  new and  rapidly emerging, especially  the intranet  software market, and
there can be no assurance that the Company will be able to compete  successfully
against  current or future competitors, nor can there be any assurance that this
competition will not  result in price  reductions of the  Company's products  or
loss  of market  share or  will not  in some  other manner  materially adversely
affect the Company's business, operating results and financial condition.
 
NEW PRODUCT DEVELOPMENT AND TECHNOLOGICAL CHANGE
 
    Substantially  all  of  the  Company's  revenues  have  been  derived,   and
substantially  all of the Company's future  revenues are expected to be derived,
from  the  license  of  its  software  and  sale  of  its  associated  services.
Accordingly, broad acceptance of the Company's software products and services by
customers  is critical to the Company's future success. However, the markets for
the  Company's  products  are  characterized  by  rapidly  changing  technology,
evolving  industry standards and frequent  new product introductions; therefore,
the Company's future success will depend on its ability to design, develop, test
and support new software
 
                                       8
<PAGE>
products and  enhancements  on  a  timely and  cost-effective  basis  that  meet
changing  customer needs and respond  to technological developments and emerging
industry standards. There can be no assurance that the Company will successfully
identify new product opportunities and develop  and bring new products, such  as
Netscape  SuiteSpot 3.0 and Netscape Communicator 4.0, to market in a timely and
cost-effective manner, or that products or technologies developed by others will
not render the  Company's products or  technologies obsolete or  noncompetitive.
While   the  Company  has  addressed  the  need  to  develop  new  products  and
enhancements primarily through its internal development efforts, the Company has
also addressed this  need through acquisitions  and the license  of third  party
technology.  Acquisitions involve numerous risks,  including difficulties in the
assimilation of  the  operations,  technologies and  products  of  the  acquired
companies, the diversion of management's attention from other business concerns,
risks  of entering markets in  which the Company has  no or limited direct prior
experience and where competitors in such markets have stronger market positions,
and the potential loss  of key employees of  the acquired company. Licensing  of
third party technology also involves numerous risks, including product liability
claims  based on  licensed technology,  liability for  licensed technology which
infringes the proprietary  rights of  others, the potential  inability of  third
party  licensors to indemnify the Company for intellectual property infringement
claims, the risk that the scope  of third party licensor indemnification is  not
as  broad as the indemnification the Company  provides to its customers, and the
unavailability of similar  technology on  commercially reasonable  terms in  the
event   that  the  third  party  technology  is  unavailable.  See  "--Uncertain
Protection of Intellectual Property; Unisys Patent Enforcement; Challenge to the
RSA License; Risks Associated with Licensed Third Party Technology." The failure
of the Company's  new product  development efforts, especially  with respect  to
Netscape  SuiteSpot  3.0 or  Netscape Communicator  4.0,  could have  a material
adverse effect  on the  Company's business,  financial condition  or results  of
operations.   The  Company's  current  products   are  designed  around  certain
standards, including, for  example, security standards,  and current and  future
sales  of  the Company's  products  will be  dependent,  in part,  on widespread
adoption of  such  standards by  enterprises,  consumers, developers  and  other
software  providers. Widespread adoption of a standard not supported by Netscape
could have  a  material adverse  effect  on the  Company's  business,  operating
results  or financial condition. In addition, there can be no assurance that the
Company will  not  experience  difficulties  that could  delay  or  prevent  the
successful   development,  introduction  and  marketing   of  new  products  and
enhancements, such as Netscape SuiteSpot  3.0 and Netscape Communicator 4.0,  or
that  its new  products and enhancements,  including Netscape  SuiteSpot 3.0 and
Netscape  Communicator  4.0,  will  adequately  meet  the  requirements  of  the
marketplace and achieve market acceptance. Further, because the Company has only
recently  commenced shipment of many of its  products, there can be no assurance
that, despite testing  by the Company  and by current  and potential  customers,
errors  will  not  be  found  in  the  Company's  products,  or,  if discovered,
successfully corrected in a timely and cost-effective manner. If the Company  is
unable  to develop on  a timely and cost-effective  basis new software products,
enhancements to existing products or error corrections, or if such new  products
or  enhancements  do  not  achieve market  acceptance,  the  Company's business,
operating results and financial condition will be materially adversely affected.
See "Business--Recent Developments--Planned Products and Releases".
 
DEVELOPING MARKET; NEW ENTRANTS; UNCERTAIN ACCEPTANCE OF THE COMPANY'S PRODUCTS;
PRICE EROSION;
UNCERTAIN ADOPTION OF INTERNET AND INTRANETS AS A MEDIUM OF COMMERCE AND
COMMUNICATIONS
 
    The market  for the  Company's  software and  services, especially  for  its
intranet  products and services,  is relatively new, is  rapidly evolving and is
characterized by an increasing number of market entrants who have introduced  or
developed products and services for communication and commerce over the Internet
and intranets. As is typical in the case of a new and rapidly evolving industry,
demand  and market acceptance for recently  introduced products and services are
subject to a high level of uncertainty. The industry is relatively young and has
a limited number of  proven products. Moreover,  critical issues concerning  the
use  of intranets  and of the  Internet (including  security, reliability, cost,
ease of deployment and administration and quality of service) remain  unresolved
and  may  impact the  growth of  intranet  and Internet  use. While  the Company
believes that its  software products offer  significant advantages for  commerce
and communication over the
 
                                       9
<PAGE>
Internet   and  intranets,  there   can  be  no   assurance  that  commerce  and
communication over the Internet or intranets will become widespread, or that the
Company's products for commerce and communication over the Internet or intranets
will become widely adopted for these purposes.
 
    In particular,  the  Company's client  software  competes with  free  client
software  distributed by online service providers, Internet access providers and
others. In addition,  computer operating systems  companies, notably  Microsoft,
bundle  client software with their operating  systems at little or no additional
cost to users, which  may cause the  price of the  Company's client products  to
decline.  The  Company  announced  significant price  reductions  in  its server
product line during the  quarter ended December 31,  1995 and announced  further
price  reductions in its server product line in March 1996. See "--Competition."
Moreover, continued market  acceptance of  the Company's  server and  commercial
applications  software products is substantially  dependent upon the adoption of
the Internet and intranets for commerce and communications. The adoption of  the
Internet  or intranets  for commerce  and communications,  particularly by those
individuals and  enterprises which  have  historically relied  upon  alternative
means  of commerce and communication, generally requires the acceptance of a new
way  of  conducting   business  and  exchanging   information.  In   particular,
enterprises  that have already invested substantial  resources in other means of
conducting commerce and exchanging information may be particularly reluctant  or
slow  to  adopt a  new strategy  that may  make  some or  all of  their existing
information systems  technology, software  and  systems obsolete.  In  addition,
there  can be no assurance that individual PC  users in business or at home will
adopt or,  if adopted,  continue to  use the  Internet or  intranets for  online
commerce or communication.
 
    Because  the market for the Company's  products and services, especially its
intranet products and services, is relatively new and evolving, it is  difficult
to predict the future growth rate, if any, and size of this market. There can be
no  assurance  that the  market  for the  Company's  products and  services will
continue to develop, that the Company's new products or services, especially its
intranet products and services,  will be adopted or  that existing products  and
services  will continue to be adopted, or that the Internet or intranets will be
widely adopted for commerce and communication.  If the market for the  Company's
products  fails to  continue to develop,  develops more slowly  than expected or
becomes saturated  with  competitors,  or  if the  Company's  new  products  and
services,  especially its intranet products and  services, do not achieve market
acceptance, the Company's  business, operating results  and financial  condition
will be materially adversely affected.
 
MANAGEMENT OF GROWTH
 
    The  rapid execution necessary  for the Company to  fully exploit the market
window for  its  products  and  services  requires  an  effective  planning  and
management  process.  The Company's  rapid growth  has  placed, and  its planned
growth is expected to continue to  place, a significant strain on the  Company's
managerial,  operational and financial resources. As  of September 30, 1996, the
Company had  grown  to  approximately 1,400  employees  from  approximately  189
employees  on December  31, 1994.  In addition,  the Company  has completed four
acquisitions in the last 12 months; assimilating the operations and personnel of
such acquired companies has  also placed a significant  strain on the  Company's
managerial,  operational  and financial  resources.  To manage  its  growth, the
Company must continue  to implement  and improve its  operational and  financial
systems  and to expand, train and manage its employee base. Further, the Company
is required and will  continue to be required  to manage multiple  relationships
among various customers, suppliers, resellers, licensors, strategic partners and
other  third parties.  Although the Company  believes that it  has made adequate
allowances for the costs and risks associated with this expansion, there can  be
no assurance that the Company's systems, procedures or controls will be adequate
to support the Company's current or future operations or that Company management
will  be able to effectively  manage this expansion and  still achieve the rapid
execution necessary  to  fully  exploit  the market  window  for  the  Company's
products  and  services in  a timely  and  cost-effective manner.  The Company's
future operating results will also depend on its ability to expand its sales and
marketing organizations,  implement  and  manage new  distribution  channels  to
penetrate  different and broader  markets, particularly the  market for intranet
software for the  enterprise, and expand  its support organization  commensurate
with the increasing base of its installed
 
                                       10
<PAGE>
products.  If the Company  is unable to  manage growth effectively  or unable to
achieve the rapid execution necessary to fully exploit the market window for the
Company's products  and services  in  a timely  and cost-effective  manner,  the
Company's business, operating results and financial condition will be materially
adversely affected.
 
RISKS OF ACQUISITIONS AND INVESTMENTS
 
    During  the nine months ended September  30, 1996, the Company completed the
business combinations with InSoft,  Paper Software and  Netcode and incurred  an
aggregate  of $6.1 million in acquisition and related costs. In addition, during
the nine months ended September 30, 1996, the Company formed two joint  ventures
and  made several equity investments in companies with complementary technology.
As part  of  its overall  strategy,  the Company  plans  to enter  into  further
business  combinations and  significant investments  in complementary companies,
products or  technologies  and  to  enter  into  joint  ventures  and  strategic
alliances  with other companies.  Any such transactions  would be accompanied by
the risks commonly  encountered in  such transactions.  In particular,  business
combinations with high technology companies include such risks as the difficulty
of  assimilating the  operations and  personnel of  the combined  companies, the
potential disruption of the Company's ongoing business, the inability to  retain
key  technical and managerial personnel, the inability of management to maximize
the financial  and strategic  position  of the  Company through  the  successful
integration   of  acquired  businesses,   additional  expenses  associated  with
amortization  of  acquired  intangible   assets,  the  maintenance  of   uniform
standards, controls, procedures and policies and the impairment of relationships
with  employees and customers as  a result of any  integration of new personnel.
There can be  no assurance that  the Company would  be successful in  overcoming
these  risks or any other problems  encountered in connection with such business
combinations, investments or joint ventures  or that such transactions will  not
materially  adversely  affect  the Company's  business,  financial  condition or
results of operations.
 
LIMITED OPERATING HISTORY; ACCUMULATED DEFICIT
 
    The Company was incorporated  in April 1994, and,  although the Company  has
acquired  a number of companies which were  incorporated prior to that time, the
Company only commenced shipment of its  products for intranets and the  Internet
in  December 1994. Accordingly,  the Company has  a relatively limited operating
history upon which an evaluation of the Company and its prospects can be  based.
The  Company's prospects must be considered in  light of the risks, expenses and
difficulties frequently  encountered  by companies  in  their earlier  stage  of
development,  particularly  companies in  new and  rapidly evolving  markets. To
address  these  risks,  the  Company  must,  among  other  things,  respond   to
competitive  developments, continue  to attract,  retain and  motivate qualified
persons, expand  its  management  processes and  capabilities  and  continue  to
upgrade  its technologies  and successfully commercialize  products and services
incorporating such technologies. There can be no assurance that the Company will
be successful in  addressing such risks.  The Company incurred  net losses  from
inception through the quarter ended June 30, 1995. As of September 30, 1996, the
Company  had an accumulated  deficit of $11.0 million.  Although the Company has
experienced revenue growth in recent  periods, historical growth rates will  not
be sustained and are not indicative of future operating results. There can be no
assurance that the Company will sustain profitability.
 
NEED TO MANAGE EVOLVING MARKET AND PRODUCTS
 
    The  Company's  software  business has  historically  been  characterized by
relatively short sales cycles, relatively small initial sales orders, relatively
simple uses for its software, short product development cycles and low aggregate
royalty payments to third parties for embedded technology. However, the  Company
has  evolved and expanded its  product lines, and, as  the Company has increased
its focus on  sales to enterprise  customers, the Company's  business has  been,
and,  will continue to be, characterized  by longer sales cycles, larger initial
sales orders,  more complex  use  of its  software, longer  product  development
cycles  and  higher aggregate  royalty payments  to  third parties  for embedded
technology. For  example, the  Company's server  product line  has evolved  from
software  products which merely  enabled publication of  HTML-based documents to
SuiteSpot, an  integrated suite  of server  products that  address an  array  of
complex  information technology  issues such as  e-mail, groupware, calendaring,
security for internal information and online
 
                                       11
<PAGE>
commerce, as well as  information publication. Further,  the Company now  offers
complex  commercial  application software  to  accompany its  server  and client
software. Organizations which initially purchased Internet and intranet products
for trial use are now building complex intranets. The Company expects that sales
of its software will be increasingly made to enterprises, and that due to higher
price points and  more complex uses,  these sales will  require approval at  the
highest levels of the customer's organization. These sales are likely to be more
difficult,  expensive  and  time-consuming  for the  Company,  and  will require
greater training  of  the  Company's  sales  personnel  and  reseller  partners.
Further,  these sales generally  involve a significant  commitment of capital by
prospective customers,  with the  attendant  delays frequently  associated  with
large  capital  expenditures and  lengthy acceptance  procedures. For  these and
other reasons, the  sales cycle  associated with  the license  of the  Company's
software  products has lengthened, may continue to  lengthen and is subject to a
number of significant risks over which the Company has little or no control. The
Company has relatively limited experience with  these types of sales, and  there
can  be no assurance that  the Company will be  able to successfully manage this
evolution in its business, and the failure to successfully manage this evolution
in its business could have a material adverse effect on the Company's  business,
operating results and financial condition.
 
EVOLVING DISTRIBUTION CHANNELS
 
    The  Company sells its products directly  to end-users and via the Internet.
In addition, the Company offers its  products indirectly through OEMs, VARs  and
software  retailers.  The  Company is  currently  pursuing a  strategy  which is
intended to  increase sales  through  OEMs, VARs  and  system integrators  as  a
percentage  of total revenues, especially  in international markets. The Company
expects that any material increase in sales through Resellers as a percentage of
total revenues, especially any increase in the percentage of sales through OEMs,
VARs and system integrators, will adversely affect the Company's average selling
prices and gross margins due to the lower unit prices that are typically charged
when selling  through  indirect  channels. In  recent  quarters,  sales  through
indirect  channels have increased  as a percentage of  total revenues, which has
adversely impacted average selling prices;  however, gross margins to date  have
not  decreased due  to the  large percentage of  sales through  OEMs, which have
lower associated costs of  revenues than other Resellers  due to the absence  of
packaging  costs. Other potential adverse consequences of the Company's focus on
increasing sales through Resellers are the diversion of management resources and
attention from direct sales, which could adversely affect direct sales  revenue,
and  greater revenue fluctuation due to  a greater percentage of retail revenue,
which  tends  to  fluctuate  with  product  releases  and  may  be  subject   to
seasonality.  Moreover, there can be no assurance  that the Company will be able
to continue to  attract and retain  Resellers that  will be able  to market  the
Company's  products effectively, particularly Resellers of intranet software for
the enterprise,  and will  be  qualified to  provide timely  and  cost-effective
customer  support and service. There  also can be no  assurance that the Company
will be able to manage conflicts among its Resellers. In addition, the Company's
agreements with Resellers typically do not restrict Resellers from  distributing
competing  products, and in many cases may be terminated by either party without
cause. Further, in  some cases  the Company has  granted exclusive  distribution
rights  that are limited by territory and in duration. Consequently, the Company
may be adversely affected should any  Reseller fail to adequately penetrate  its
market  segment. The inability to recruit, manage or retain important Resellers,
particularly Resellers  of  intranet  software  for  the  enterprise,  or  their
inability  to  penetrate  their  respective  market  segments,  could materially
adversely  affect  the  Company's  business,  operating  results  or   financial
condition.
 
    In  addition  to  expanding  its direct  sales  channels,  the  Company will
continue  to  distribute  its  products  electronically  through  the  Internet.
Distributing  the Company's  products through  the Internet  makes the Company's
software more susceptible than other  software to unauthorized copying and  use.
The  Company has historically allowed and currently intends to continue to allow
potential customers to  electronically download its  client and server  software
for a free evaluation period. There can be no assurance that, upon expiration of
the  evaluation period, the Company  will be able to  collect payment from users
that retain a copy of the  Company's software. In addition, by distributing  its
products for free evaluation over the Internet, the Company may have reduced the
future   demand  for   its  products.  If,   as  a  result   of  changing  legal
 
                                       12
<PAGE>
interpretations of liability for unauthorized  use of the Company's software  or
otherwise,   users  were  to   become  less  sensitive   to  avoiding  copyright
infringement, the Company's business, operating results and financial  condition
would be materially adversely affected.
 
SECURITY RISKS AND SYSTEM DISRUPTIONS; LACK OF PRODUCT LIABILITY INSURANCE FOR
PRODUCTS
INCORPORATING SECURITY FEATURES
 
    The Company has included in its products security protocols which operate in
conjunction with encryption and authentication technology licensed from RSA Data
Security  Inc.  ("RSA").  Despite  the  existence  of  these  technologies,  the
Company's products have  been found to  be vulnerable to  break-ins and  similar
disruptive  problems caused by Internet users. In the last two years, there have
been several instances in which  weaknesses or vulnerabilities in the  Company's
security   implementation  were  discovered.   In  each  instance   in  which  a
vulnerability  or   weakness   was   discovered  in   the   Company's   security
implementation,  the Company attempted to  address the vulnerability or weakness
by making the various design changes in its security and reviewing those changes
both internally and  with a broad  set of outside  industry experts. The  design
changes appear to have resolved known security vulnerabilities and weaknesses in
the Company's products.
 
    In  addition,  the  Company's  products  incorporate  technology  from other
software companies which could be vulnerable to security flaws. For example,  in
March  1996  certain  security flaws  were  discovered in  the  Java programming
language; in  particular, one  security  flaw was  discovered which  could  have
jeopardized  the  security of  information stored  in  the computer  of Netscape
Navigator users.  Sun,  the licensor  of  Java, has  corrected  this  particular
security  flaw and  has distributed  the software  fix to  the Company. However,
there can be no assurance that the Company's products will not be susceptible to
other security flaws, whether in the Company's products or technologies, in Java
or in other technology incorporated into the Company's products.
 
    Despite the Company's attempts to address the vulnerabilities and weaknesses
in its security implementation, the  Company's products and licensed  technology
incorporated  in such  products may continue  to be vulnerable  to break-ins and
similar disruptive problems caused by  Internet users. Further, as is  generally
known,  weaknesses in  the environment in  which Netscape products  are used may
compromise the security of confidential electronic information exchanges  across
the Internet. This includes, but is not limited to, the security of the physical
network, security of the physical machines used for the information transfer and
the  security of the operating system on  top of which the Netscape products are
running. Any  such  flaws  in  the Internet  or  the  end-user  environment,  or
weaknesses  or vulnerabilities in the  Company's products or licensed technology
incorporated in such  products, would  jeopardize the  security of  confidential
information  sent over the Internet using Netscape software, such as credit card
numbers and e-mail, and  might enable others to  dismantle the special  security
techniques meant to protect such transactions.
 
    Any  further computer  break-ins or  other disruptions  could jeopardize the
security of information stored in  and transmitted through the computer  systems
of  end-users  of  the  Company's  products,  which  may  result  in significant
liability to the Company and may  also deter potential customers. Moreover,  the
security  and privacy concerns  of existing and potential  customers, as well as
concerns related to computer viruses, may inhibit the growth of the Internet and
intranet market  generally, and  the  Company's customer  base and  revenues  in
particular.  The  Company  attempts to  limit  its liability  to  its customers,
including  liability  arising  from  failure  of  the  security   implementation
contained  in the  Company's products, through  contractual provisions. However,
there can be no assurance that  such limitations will be effective. The  Company
currently  does not  have product liability  insurance to  protect against risks
associated with forced break-ins or disruptions. There can be no assurance  that
additional security vulnerabilities and weaknesses will not be discovered in the
Company's  products or licensed technology incorporated in such products or that
weaknesses in the end-user environments will  not limit the use of the  Internet
as  a  commercial  medium.  Any  additional  security  related  problems  in the
Company's products  or licensed  technology incorporated  in such  products  may
require  significant expenditures  of capital  and resources  by the  Company to
alleviate such problems, may result in lawsuits against the Company, may  result
in loss of customers and may cause
 
                                       13
<PAGE>
interruptions,  delays  or  cessations  of product  shipments  to  the Company's
customers. Any such  expenditures, lawsuits, loss  of customers,  interruptions,
cessations  or  delays  would  likely  have a  material  adverse  effect  on the
Company's business, operating results and financial condition.
 
GOVERNMENT REGULATION AND LEGAL UNCERTAINTIES
 
    The Company is not currently subject to direct government regulation,  other
than  pursuant to securities  laws and the  regulations thereunder applicable to
all publicly owned companies and  laws and regulations applicable to  businesses
generally,  and there are currently few  laws or regulations directly applicable
to access  to  or commerce  on  the Internet.  However,  due to  the  increasing
popularity  and use  of the  Internet, it is  likely that  a number  of laws and
regulations may be adopted at the local, state, national or international levels
with respect  to  the  Internet,  covering  issues  such  as  user  privacy  and
expression,   pricing   of   products  and   services,   taxation,  advertising,
intellectual  property  rights,  information  security  or  the  convergence  of
traditional  communication services  with Internet  communications. For example,
the Telecommunications Reform  Act of  1996 (the constitutionality  of which  is
currently  under challenge) was recently  enacted and imposes criminal penalties
(via the Communications Decency Act or "CDA") on anyone who distributes obscene,
lascivious or indecent communications over the Internet. Moreover, the  adoption
of  any such laws or regulations may  decrease the growth of the Internet, which
could in turn  decrease the demand  for the Company's  products or increase  the
Company's cost of doing business or in some other manner have a material adverse
effect  on the Company's business, operating  results or financial condition. In
addition, the applicability to  the Internet of  existing laws governing  issues
such  as property ownership, copyrights  and other intellectual property issues,
taxation, libel and  personal privacy is  uncertain. The vast  majority of  such
laws  were adopted prior to the advent  of the Internet and related technologies
and, as  a result,  do  not contemplate  or address  the  unique issues  of  the
Internet  and related  technologies. Changes  to such  laws intended  to address
these issues, including some recently proposed changes, could create uncertainty
in the marketplace which could reduce  demand for the Company's products,  could
increase the Company's cost of doing business as a result of costs of litigation
or  increased product development  costs, or could  in some other  manner have a
material  adverse  effect  on  the  Company's  business,  operating  results  or
financial condition.
 
    Because  the encryption  technology contained  in the  Company's products is
deemed to be  a "munition," such  products are subject  to U.S. export  controls
pertaining  to munitions. There  can be no assurance  that such export controls,
either in their current form or as  may be subsequently revised, will not  limit
the  Company's ability to  distribute certain encrypted  products outside of the
United States  or  electronically.  While  Netscape  takes  precautions  against
unlawful exportation, such exportation may occur from time to time. In addition,
federal  or  state  legislation  or  regulation  may  further  limit  levels  of
encryption or  authentication technology,  and foreign  governments could  enact
import  laws or  regulations that may  restrict the type  of encryption software
that  is  permitted  for  distribution  in  their  countries.  Moreover,  as   a
consequence  of  such export  controls, Netscape  must  develop and  market both
domestic and  international versions  of its  products that  contain  encryption
software,  with  the version  for the  U.S.  market having  a stronger  level of
encryption than the version for export to international markets. Along with  the
additional  costs  associated  with the  duplication  of effort  and  expense in
research, development, manufacturing and  distribution of different versions  of
products,  the Company may lose  sales from customers who  wish to have the same
level of encryption security throughout their organization. The Company may also
encounter difficulties competing overseas with  competitors that are subject  to
less  restrictive  controls.  Finally, due  to  the weaker  level  of encryption
contained in the Company's products shipped internationally, the Company may not
acquire the installed international base necessary to make the functionality  of
its products part of an international standard.
 
    Additionally,   some  countries  have  enacted  import  laws  requiring  the
alteration of  the  Company's products  in  order  for the  government  of  such
countries  to maintain a level of control  over the content of products entering
such countries. In addition  to the costs incurred  by the Company in  complying
with varying international regulations, alteration of the Company's products may
cause such products to perform at a
 
                                       14
<PAGE>
level  below their intended  level and thereby subject  the Company to potential
liability and other adverse consequences.  Any such export restrictions,  import
restrictions, new legislation or regulation or unlawful exportation could have a
material  adverse  impact  on  the  Company's  business,  operating  results  or
financial condition.
 
UNCERTAIN PROTECTION OF INTELLECTUAL PROPERTY; UNISYS PATENT ENFORCEMENT;
CHALLENGE TO RSA LICENSE;
RISKS ASSOCIATED WITH LICENSED THIRD PARTY TECHNOLOGY
 
    The Company's success and ability to  compete is dependent in part upon  its
internally developed technology. While the Company relies on patents, trademark,
trade  secret and copyright law to  protect its technology, the Company believes
that factors such as the technological and creative skills of its personnel, new
product  developments,  frequent  product  enhancements,  name  recognition  and
reliable  product maintenance are more essential to establishing and maintaining
a technology leadership position. There can be no assurance that others will not
develop technologies that are similar  or superior to the Company's  technology.
The Company generally enters into confidentiality or license agreements with its
employees,  consultants  and  vendors,  and  generally  controls  access  to and
distribution of its software,  documentation and other proprietary  information.
Despite  these precautions,  it may  be possible  for a  third party  to copy or
otherwise  obtain  and  use  the   Company's  products  or  technology   without
authorization,  or  to develop  similar  technology independently.  In addition,
effective patents, copyright and trade  secret protection may be unavailable  or
limited  in  certain foreign  countries. To  license  its products,  the Company
relies in part on  "shrink wrap" licenses  that are not  signed by the  end-user
and,  therefore, may be  unenforceable under the  laws of certain jurisdictions.
Despite the Company's  efforts to protect  its proprietary rights,  unauthorized
parties  may attempt to copy aspects of  the Company's products or to obtain and
use information that the Company  regards as proprietary. Policing  unauthorized
use  of the Company's products is difficult.  There can be no assurance that the
steps taken by the  Company will prevent misappropriation  of its technology  or
that  such  agreements  will  be enforceable.  In  addition,  litigation  may be
necessary in the future to  enforce the Company's intellectual property  rights,
to  protect the Company's trade secrets, to  determine the validity and scope of
the proprietary rights of others, or to defend against claims of infringement or
invalidity. Such litigation could result  in substantial costs and diversion  of
resources  and could have  a material adverse effect  on the Company's business,
operating results or financial condition.
 
    Unisys Corporation ("Unisys")  has announced  its intention  to require  the
payment  of royalties for the use  of compression technology associated with the
Graphics Interchange  Format  ("GIF"). Unisys  asserts  that this  popular  file
format  is based  on compression  technology patented  by Unisys.  The Company's
products have the ability  to decompress files, including  files stored in  GIF.
The  Company and,  to the  Company's knowledge,  other licensees,  have received
notice of Unisys' intention to enforce or license such patent. The Company could
incur additional costs and liability should  its products be found to be  within
the  scope of the Unisys  patent, including costs and  liability from claims for
indemnification resulting  from  infringement.  The assertion  of  these  patent
rights  by  Unisys, if  successful, could  prevent  the Company's  products from
enabling users to view files compressed in GIF. The Company does not believe its
products infringe the Unisys patent; however, there can be no assurance that the
Company's products are not  within the scope  of the Unisys  patent or that  the
Company's  business,  operating  results  and financial  condition  will  not be
materially adversely affected if the Company's  products are found to be  within
the scope of the Unisys patent.
 
    From  time to time the  Company has, in addition  to the notice from Unisys,
received, and may  receive in the  future, notice of  claims of infringement  of
other  parties' proprietary rights.  Although the Company  does not believe that
its products infringe the proprietary rights of any third parties, there can  be
no   assurance   that  infringement   or  invalidity   claims  (or   claims  for
indemnification resulting  from infringement  claims) will  not be  asserted  or
prosecuted  against the Company or that any such assertions or prosecutions will
not materially adversely affect the  Company's business, financial condition  or
results  of operations. Irrespective of the validity or the successful assertion
of such  claims, the  Company would  incur significant  costs and  diversion  of
resources  with  respect to  the  defense thereof  which  could have  a material
adverse effect on the
 
                                       15
<PAGE>
Company's business, financial condition or  results of operations. In  addition,
the assertion of such infringement claims could result in injunctions preventing
Netscape from distributing certain products, which could have a material adverse
effect  on the Company's business, financial condition or results of operations.
If any claims or actions are asserted against the Company, the Company may  seek
to  obtain a license  under a third party's  intellectual property rights. There
can be no assurance, however, that under such circumstances, a license would  be
available on reasonable terms or at all.
 
   
    On  August 7, 1995, Netscape received a letter from a law firm purporting to
represent  Caro-Kann   Corporation  ("Caro-Kann"),   a  subsidiary   of   Cylink
Corporation,  which is a partner with RSA  in Public Key Partners ("PKP"), which
partnership purportedly  holds certain  exclusive  licensing rights  to  certain
patents covering the practice of public key cryptography and digital signatures.
Caro-Kann  alleges that the license agreement  between RSA and Netscape relating
to certain RSA software conflicts with the  rights held by PKP. RSA has  advised
Netscape  that  the allegations  of Caro-Kann  are  unfounded. The  parties have
arbitrated  portions  of  this  dispute   and  currently  disagree  as  to   the
interpretation  of the arbitration ruling. RSA has brought suit in federal court
against Cylink  Corporation  over certain  patent  related claims.  Netscape  is
unable  to ascertain the  significance of Caro-Kann's  allegations or whether or
not any decision  adverse to  RSA in the  arbitration or  other proceedings  may
invalidate  or otherwise  limit the license  to Netscape.  In Netscape's license
agreement with RSA,  RSA has agreed  to defend and  indemnify and hold  Netscape
harmless  with respect to any claim by  a third party that the licensed software
infringes any patent or other proprietary rights. Although the Netscape  license
is  fully paid-up,  there can be  no assurance  that the outcome  of this matter
would  not  lead  to  royalty  obligations.  Many  of  the  Company's   products
incorporate  data encryption and server  authentication technology licensed from
RSA.
    
 
    The Company also relies on certain  other technology which it licenses  from
third  parties, including software which is integrated with internally developed
software and used in the Company's products to perform key functions. There  can
be  no assurance that these third party  technology licenses will continue to be
available to  the Company  on  commercially reasonable  terms.  The loss  of  or
inability to maintain any of these technology licenses could result in delays or
reductions in product shipments until equivalent technology could be identified,
licensed  and integrated.  Any such  delays or  reductions in  product shipments
could materially adversely affect the  Company's business, operating results  or
financial  condition. Moreover, although the Company is generally indemnified by
the third parties against  claims that the  third parties' technology  infringes
the  proprietary rights of others, such  indemnification is not always available
for all  types of  intellectual property  rights (for  example, patents  may  be
excluded)  and in some  cases the geographical scope  of such indemnification is
limited. The result is that the indemnity that the Company receives against such
claims is often less broad than the  indemnity that the Company provides to  its
customers. Even in cases in which the indemnity that the Company receives from a
third  party licensor is as broad as  the indemnity that the Company provides to
its customers, often the  third party licensors from  whom the Company would  be
receiving  indemnity are not  well-capitalized and may not  be able to indemnify
the Company  in  the  event  that such  third  party  technology  infringes  the
proprietary  rights of others.  Accordingly, the Company  could have substantial
exposure in the  event that  technology licensed  from a  third party  infringes
another  party's proprietary  rights. The  Company currently  does not  have any
liability insurance  to  protect against  the  risk that  licensed  third  party
technology infringes the proprietary rights of others. There can be no assurance
that  infringement or invalidity claims arising  from the incorporation of third
party technology, and  claims for indemnification  from the Company's  customers
resulting  from  such infringement  claims will  not  be asserted  or prosecuted
against the  Company  or that  any  such  assertions or  prosecutions  will  not
materially  adversely  affect  the Company's  business,  financial  condition or
results of operations. Irrespective of  the validity or successful assertion  of
such  claims, the  Company would  incur significant  costs and  the diversion of
resources with respect to the defense thereof, in addition to potential  product
redevelopment  costs  and delays,  all of  which could  have a  material adverse
effect on the Company's business, financial condition or results of operations.
 
                                       16
<PAGE>
DEPENDENCE ON KEY PERSONNEL
 
    The Company's performance is substantially  dependent on the performance  of
its  executive officers and key employees, many of whom have worked together for
only a  short period  of time.  Given the  Company's relatively  early stage  of
development,  the Company  is dependent  on its  ability to  retain and motivate
highly  qualified  personnel,  especially  its  management  and  highly  skilled
development  teams.  The  Company  does not  have  "key  person"  life insurance
policies on  any of  its employees.  The  loss of  the services  of any  of  its
executive  officers or other key employees  could have a material adverse effect
on the business, operating  results or financial condition  of the Company.  See
"Management".
 
    The  Company's  future success  also depends  on  its continuing  ability to
identify, hire, train and retain other highly qualified technical and managerial
personnel, especially  software developers.  Competition for  such personnel  is
intense, and there can be no assurance that the Company will be able to attract,
assimilate  or retain other highly  qualified technical and managerial personnel
in the future. The inability to  attract and retain the necessary technical  and
managerial  personnel  could have  a material  adverse  effect on  the Company's
business, operating results or financial condition.
 
RISKS ASSOCIATED WITH INTERNATIONAL OPERATIONS AND EXPANSION
 
    International revenues (sales outside  of North America) were  approximately
17%  and 28% of total revenues for the year ended December 31, 1995 and the nine
months ended September 30, 1996, respectively. A key component of the  Company's
strategy  is its  continued expansion into  international markets.  To date, the
Company has  only limited  experience in  developing localized  versions of  its
products  and marketing and  distributing its products  internationally, and the
Company is currently incurring,  and expects to  continue to incur,  significant
costs  in  developing, marketing  and  distributing localized  versions.  If the
international revenues are not  adequate to offset  the expense of  establishing
and  maintaining foreign  operations and the  costs of  localizing the Company's
products, the Company's business, operating results or financial condition could
be materially adversely  affected. There can  be no assurance  that the  Company
will  be able to successfully  market, sell and deliver  its products in foreign
markets. In addition to the uncertainty as to the Company's ability to  continue
to  generate revenues from  its foreign operations  and expand its international
presence, there are certain risks inherent in doing business on an international
level, such as unexpected changes in regulatory requirements, export and  import
restrictions,  export  and import  controls  relating to  encryption technology,
tariffs and other trade barriers, difficulties in staffing and managing  foreign
operations,  longer payment cycles, problems  in collecting accounts receivable,
political instability, fluctuations in currency exchange rates, software piracy,
seasonal reductions in business activity during the summer months in Europe  and
certain other parts of the world and potentially adverse tax consequences, which
could  adversely impact the  success of the  Company's international operations.
There can be  no assurance  that one or  more of  such factors will  not have  a
material  adverse effect on  the Company's future  international operations and,
consequently,  on  the  Company's  business,  operating  results  and  financial
condition.
 
DEPENDENCE ON THE INTERNET
 
    Although  some sales  of the Company's  products will depend  upon growth of
intranets, sales of the Company's products will continue to depend in large part
upon a  robust industry  and infrastructure  for providing  Internet access  and
carrying  Internet traffic. The Internet may not prove to be a viable commercial
marketplace because of  inadequate development of  the necessary  infrastructure
(e.g.,   reliable  network  backbone),  untimely  development  of  complementary
products (e.g., high speed modems), delays in the development or adoption of new
standards  and  protocols  required  to  handle  increased  levels  of  Internet
activity,  or due to increased government regulation. In addition, to the extent
that the Internet continues  to experience significant growth  in the number  of
users  and  the  level of  use,  there can  be  no assurance  that  the Internet
infrastructure will continue to be able to  support the demands placed on it  by
such   potential  growth.  Because  global   commerce  and  online  exchange  of
information on the Internet  and other similar open  wide area networks are  new
and evolving, it is difficult to predict with any assurance whether the Internet
will
 
                                       17
<PAGE>
prove  to be a viable commercial marketplace. If the necessary infrastructure or
complementary products are not developed, or  if the Internet does not become  a
viable  commercial marketplace,  the Company's  business, operating  results and
financial condition will be materially adversely affected.
 
EXTREME VOLATILITY OF STOCK PRICE AND RISK OF LITIGATION
 
    The Company's  common  stock  price  has been  extremely  volatile  and  has
experienced  substantial and  sudden fluctuations,  particularly as  a result of
announcements by the Company and its competitors and announcements with  respect
to  the  industry  generally.  In addition,  the  stock  market  has experienced
significant price  and volume  fluctuations that  have especially  affected  the
market   prices  of  equity  securities   of  many  high  technology  companies,
particularly Internet-related companies, and that  often have been unrelated  to
the  operating performance  of such  companies. These  broad market fluctuations
have adversely affected and may continue to adversely affect the market price of
the Company's common stock. In the past, following periods of volatility in  the
market  price of a company's securities,  securities class action litigation has
often been instituted against  such a company. Such  litigation could result  in
substantial costs and a diversion of management's attention and resources, which
would  have  a  material adverse  effect  on the  Company's  business, operating
results and financial condition.
 
CONCENTRATION OF STOCK OWNERSHIP
 
    Upon completion  of  this offering,  the  Company's executive  officers  and
directors,  together  with  entities  affiliated  with  such  individuals,  will
beneficially  own   approximately   42.5%   of  the   Company's   Common   Stock
(approximately  42.2% if the Underwriters' over-allotment option is exercised in
full). Accordingly,  these stockholders  will be  able to  exercise  significant
influence over matters requiring stockholder approval, including the election of
directors and approval of significant corporate transactions. This concentration
of  ownership may have the effect of  delaying or preventing a change in control
of the Company. See "Principal and Selling Stockholders."
 
SHARES ELIGIBLE FOR FUTURE SALE
 
    Sales of a substantial number of shares of Common Stock in the public market
following this offering could adversely affect  the market price for the  Common
Stock. Each of the executive officers and directors of the Company, and entities
affiliated  with one of  the Company's non-employee  directors, who collectively
held as of September 30, 1996 an aggregate of 35,694,037 shares, have agreed not
to sell or otherwise dispose of Common Stock of the Company through February 15,
1997 without the prior consent of Morgan Stanley & Co. Incorporated, except  for
an  aggregate  of  200,000 shares  held  by  certain executive  officers  of the
Company, which shall not  have such restriction.  Certain other stockholders  of
the   Company,  including  an  entity  affiliated  with  one  of  the  Company's
non-employee directors, who are selling an aggregate of 3,000,000 shares in this
offering and will hold an aggregate of 2,352,727 shares after the offering, have
agreed not to sell or otherwise dispose of Common Stock of the Company for up to
120 days after the date of this  Prospectus without the prior consent of  Morgan
Stanley & Co. Incorporated. The Company has agreed in the Underwriting Agreement
that  it will not, directly or indirectly,  without the prior written consent of
Morgan Stanley & Co. Incorporated, offer,  pledge, sell, contract to sell,  sell
any  option or contract  to purchase, purchase  any option or  contract to sell,
grant any option, right or warrant to purchase, or otherwise transfer or dispose
of any shares of Common Stock or any securities convertible into or exchangeable
for Common Stock, for a  period of 120 days after  the date of this  Prospectus,
subject  to  certain  limited  exceptions.  Except  for  shares  subject  to the
restrictions set forth above and (i)  14,219,720 shares subject to a  repurchase
right  of the Company which generally lapses at a rate of 20% after 10 months of
service and two percent per month thereafter, and (ii) 2,755,544 shares held  by
existing  stockholders which are "restricted securities" as that term is defined
in Rule 144 under  the Securities Act  and are not eligible  for sale until  the
expiration  of their  respective two-year holding  periods, all  other shares of
Common Stock are freely tradeable without restriction. See "Underwriters".
 
                                       18
<PAGE>
EFFECT OF CERTAIN CHARTER PROVISIONS; ANTITAKEOVER EFFECTS OF CERTIFICATE OF
INCORPORATION, BYLAWS AND
DELAWARE LAW
 
    The Board of Directors has the authority to issue up to 5,000,000 shares  of
Preferred  Stock and to determine the price, rights, preferences, privileges and
restrictions, including voting rights, of those shares without any further  vote
or action by the stockholders. The rights of the holders of Common Stock will be
subject  to, and may be adversely affected by,  the rights of the holders of any
Preferred Stock that  may be  issued in the  future. The  issuance of  Preferred
Stock,  while  providing  desirable  flexibility  in  connection  with  possible
acquisitions and other corporate  purposes, could have the  effect of making  it
more difficult for a third party to acquire a majority of the outstanding voting
stock  of  the Company.  The Company  has no  present plans  to issue  shares of
Preferred Stock.  Further,  certain  provisions of  the  Company's  Amended  and
Restated  Certificate  of  Incorporation,  including  provisions  that  create a
classified board of  directors, and of  the Amended and  Restated Bylaws and  of
Delaware  law could  delay or  make difficult  a merger,  tender offer  or proxy
contest involving the Company.
 
DILUTION
 
    Investors participating in this offering will incur immediately, substantial
dilution. To the  extent outstanding  options to purchase  the Company's  Common
Stock are exercised, there will be further dilution. See "Dilution."
 
                                       19
<PAGE>
                                USE OF PROCEEDS
 
   
    The  net proceeds to be  received by the Company  from the sale of 2,000,000
shares of Common Stock offered by the  Company hereby are estimated to be  $87.5
million  ($120.7  million if  the  U.S. Underwriters'  over-allotment  option is
exercised in full),  based on an  assumed offering  price of $46  1/8 and  after
deducting estimated underwriting discounts and commissions and offering expenses
payable  by the  Company. The Company  expects to  use the net  proceeds of this
offering primarily for general corporate purposes, including working capital and
capital expenditures.  A portion  of the  proceeds are  expected to  be used  to
secure  additional  facilities,  for  leasehold  improvements  and  for  general
corporate infrastructure. The Company  currently expects that  it will spend  an
additional  $35.0 million on such matters through  the end of the current fiscal
year. A  portion of  the proceeds  may  also be  used to  acquire or  invest  in
complementary businesses or products or to obtain the right to use complementary
technologies.   However,  the  Company  has  no  present  plans,  agreements  or
commitments and is  not currently  engaged in  any negotiations  to acquire  any
businesses.  Pending use of the net proceeds for the above purposes, the Company
intends to invest such funds in interest-bearing, investment-grade  obligations.
The Company will not receive any proceeds from the sale of shares by the Selling
Stockholders.
    
 
                          PRICE RANGE OF COMMON STOCK
 
   
    The following table sets forth the range of high and low sales prices of the
Company's  Common Stock  for the  indicated periods,  as reported  by the Nasdaq
National Market. The Company made its initial public offering on August 8,  1995
at  a price of $14 per share. On  October 30, 1996, the last reported sale price
for the Common Stock on the Nasdaq National Market was $46 1/8 per share. As  of
October  25, 1996, the Company had approximately  2,129 holders of record of the
Common Stock. All prices have been restated to reflect a two-for-one stock split
effected in January 1996.
    
 
   
<TABLE>
<CAPTION>
                                                                                           HIGH        LOW
                                                                                         ---------  ---------
<S>                                                                                      <C>        <C>
Fiscal year ended December 31, 1995:
  Third Quarter (beginning August 9, 1995).............................................  $  37 3/8  $  22 7/8
  Fourth Quarter.......................................................................         87         28
Fiscal year ending December 31, 1996:
  First Quarter........................................................................         86     34 3/4
  Second Quarter.......................................................................     75 1/4     42 1/2
  Third Quarter........................................................................     65 1/2     34 1/2
  Fourth Quarter (through October 30, 1996)............................................     50 1/2     38 1/2
</TABLE>
    
 
                                DIVIDEND POLICY
 
    The Company  has never  paid cash  dividends on  its Common  Stock or  other
securities.  The Company  currently anticipates that  it will retain  all of its
future earnings for use in the expansion and operation of its business and  does
not anticipate paying any cash dividends in the foreseeable future.
 
                                       20
<PAGE>
                                 CAPITALIZATION
 
   
    The  following  table sets  forth the  capitalization of  the Company  as of
September 30, 1996, and as adjusted to  reflect the sale of 2,000,000 shares  of
Common  Stock offered  by the  Company hereby (at  an assumed  offering price of
$46 1/8 and after deducting estimated underwriting discounts and commissions and
offering expenses payable by the Company):
    
 
   
<TABLE>
<CAPTION>
                                                                                           SEPTEMBER 30, 1996
                                                                                      ----------------------------
                                                                                                         AS
                                                                                      ACTUAL(1)    ADJUSTED(1)(2)
                                                                                      ----------  ----------------
                                                                                          (IN THOUSANDS EXCEPT
                                                                                              SHARE DATA)
<S>                                                                                   <C>         <C>
Long-term obligations...............................................................  $      659     $      659
Total stockholders' equity:
  Preferred Stock, $0.0001 par value; 5,000,000 shares authorized, none issued and
   outstanding......................................................................      --             --
  Common Stock, $0.0001 par value; 200,000,000 shares authorized, 84,535,395 shares
   issued and outstanding, actual; 86,535,395 shares issued and outstanding, as
   adjusted(3)......................................................................           8              9
  Additional paid-in capital........................................................     215,231        302,706
  Deferred compensation.............................................................      (6,742)        (6,742)
  Accumulated deficit...............................................................     (10,982)       (10,982)
  Other.............................................................................       1,489          1,489
                                                                                      ----------       --------
    Total stockholders' equity......................................................     199,004        286,480
                                                                                      ----------       --------
      Total capitalization..........................................................  $  199,663     $  287,139
                                                                                      ----------       --------
                                                                                      ----------       --------
</TABLE>
    
 
- ---------
(1) Reflects the business combinations with Collabra, InSoft, Netcode, and Paper
    Software which have been accounted for as poolings of interests.
 
(2) Assumes no exercise of the U.S. Underwriters' over-allotment option.
 
(3) Excludes, as of September 30, 1996, (i) an aggregate of 8,301,650 shares  of
    Common  Stock subject to outstanding options  under the Company's 1994 Stock
    Option Plan, 1995 Stock Plan, 1995 Director Option Plan, Collabra  Software,
    Inc.  1993 Incentive  Stock Plan,  InSoft, Inc.  1993 Stock  Option Plan and
    Netcode Corporation 1996 Stock Plan  (collectively, the "Stock Plans") at  a
    weighted  average exercise  price of $22.83  per share  and 3,257,663 shares
    reserved for future grants of  options thereunder and (ii) 1,723,494  shares
    of  Common Stock  reserved but  unissued under  the Company's  1995 Employee
    Stock Purchase Plan.
 
                                       21
<PAGE>
                                    DILUTION
 
   
    The net tangible  book value of  the Company  as of September  30, 1996  was
$195,266,000  or $2.31 per  share of Common  Stock. Net tangible  book value per
share is  determined by  dividing the  net tangible  book value  of the  Company
(total  tangible assets  less total  liabilities) by  the number  of outstanding
shares of Common  Stock at that  date. After giving  effect to the  sale by  the
Company  of the 2,000,000 shares  of Common Stock offered  hereby (at an assumed
offering price  of  $46  1/8  and  after  deduction  of  estimated  underwriting
discounts  and commissions  and offering expenses  payable by  the Company), the
Company's pro forma  net tangible book  value at September  30, 1996 would  have
been  $282,742,000 or $3.27 per share.  This represents an immediate increase in
net tangible  book value  to existing  stockholders  of $.96  per share  and  an
immediate  dilution to  new investors of  $42.86 per share.  The following table
illustrates the per share dilution:
    
 
   
<TABLE>
<CAPTION>
Assumed public offering price per share.............................             $  46.125
<S>                                                                   <C>        <C>
  Net tangible book value per share as of September 30, 1996........  $    2.31
  Increase in net tangible book value per share attributable to new
   investors........................................................        .96
                                                                      ---------
Pro forma net tangible book value per share after offering..........                  3.27
                                                                                 ---------
Dilution per share to new investors.................................             $   42.86
                                                                                 ---------
                                                                                 ---------
</TABLE>
    
 
   
    The following table sets forth on a pro forma basis as of September 30, 1996
the difference between the number of  shares of Common Stock purchased from  the
Company,  the total consideration paid, and the  average price per share paid by
the existing stockholders and by the new investors (at an assumed offering price
of $46  1/8  and  before  deduction  of  estimated  underwriting  discounts  and
commissions and offering expenses payable by the Company):
    
 
   
<TABLE>
<CAPTION>
                                              SHARES PURCHASED           TOTAL CONSIDERATION        AVERAGE
                                         --------------------------  ---------------------------   PRICE PER
                                            NUMBER        PERCENT        AMOUNT        PERCENT       SHARE
                                         -------------  -----------  --------------  -----------  -----------
<S>                                      <C>            <C>          <C>             <C>          <C>
Existing stockholders(1)...............     84,535,395         98%   $  229,087,000         71%    $    2.71
New investors..........................      2,000,000          2        92,250,000         29         46.125
                                         -------------      -----    --------------      -----
    Total..............................     86,535,395        100%   $  321,337,000        100%
                                         -------------      -----    --------------      -----
                                         -------------      -----    --------------      -----
</TABLE>
    
 
- ---------
(1)  Sales by the Selling Stockholders in the offering will reduce the number of
    shares held by  existing stockholders to  81,535,395 shares, or  94% of  the
    total number of shares outstanding after the offering, and will increase the
    number  of shares held  by new investors  to 5,000,000 shares,  or 6% of the
    total number of shares  outstanding after the  offering. See "Principal  and
    Selling Stockholders."
 
    The   foregoing  table  assumes  no   exercise  of  the  U.S.  Underwriters'
over-allotment option and no exercise of stock options outstanding at  September
30,  1996. As  of September 30,  1996, (i)  there was an  aggregate of 8,301,650
shares of Common Stock subject to outstanding options under the Company's  Stock
Plans  at a weighted  average exercise price  of $22.83 per  share and 3,257,663
shares reserved for  future grants  of options  thereunder and  (ii) there  were
1,723,494  shares of Common Stock reserved but unissued under the Company's 1995
Employee Stock Purchase Plan.
 
                                       22
<PAGE>
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
    The following table sets forth selected consolidated statement of operations
data and  balance  sheet  data  for  the  Company.  The  selected  statement  of
operations data for each of the five quarters in the period ended March 31, 1996
are  derived from the unaudited  condensed consolidated financial statements not
included  or  incorporated  by  reference  herein.  The  selected  statement  of
operations  data for each of the two  quarters in the period ended September 30,
1996 and the selected balance sheet data at September 30, 1996 are derived  from
the  unaudited  condensed  consolidated  financial  statements  of  the  Company
incorporated by reference herein. The selected balance sheet data as of December
31, 1995  is  derived  from  the  audited  supplemental  consolidated  financial
statements  incorporated by  reference herein. In  the opinion  of the Company's
management, the  unaudited condensed  consolidated financial  statements of  the
Company  include all  adjustments, consisting  of normal  recurring adjustments,
which the Company considers necessary for  a fair presentation of its  financial
position  at the end of,  and the results of  its operations for, these periods.
This  financial  data  should  be   read  in  conjunction  with  the   Company's
Supplemental  Consolidated  Financial  Statements  and  the  Notes  thereto, the
unaudited  condensed  consolidated  financial  statements  and  other  financial
information  incorporated  by reference  herein.  See "Incorporation  of Certain
Documents by Reference." In November 1995,  the Company entered into a  business
combination  with  Collabra  in a  transaction  accounted  for as  a  pooling of
interests. In April 1996, the Company  entered into a business combination  with
InSoft  in a transaction accounted for as  a pooling of interests. All financial
data of  the  Company  for the  periods  presented  has been  restated  to  give
retroactive  effect to  the business combinations  with Collabra  and InSoft. In
April and May 1996, the Company entered into business combinations with  Netcode
and  Paper Software, respectively, in transactions  accounted for as poolings of
interests. The financial data  for the operations of  Netscape since January  1,
1996  have been restated to give retroactive effect to the business combinations
with Netcode  and Paper  Software.  The financial  data  for the  operations  of
Netscape  has  not been  restated  to give  retroactive  effect to  the business
combinations with Netcode and Paper Software for any periods prior to January 1,
1996 due to immateriality. All share and per share amounts have been adjusted to
reflect the two-for-one stock split approved  on January 23, 1996. No  dividends
have  been  declared or  paid on  the  Common Stock  of Netscape.  The dividends
declared and paid by InSoft were insignificant.
<TABLE>
<CAPTION>
                                                                                           QUARTER ENDED
                                                                         --------------------------------------------------
                                                                          MARCH 31,    JUNE 30,     SEPT. 30,    DEC. 31,
                                                                            1995         1995         1995         1995
                                                                         -----------  -----------  -----------  -----------
                                                                               (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                                      <C>          <C>          <C>          <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Revenues:
  Product revenues.....................................................   $   6,057    $  13,095    $  21,979    $  36,358
  Service revenues.....................................................         388          977        1,329        5,204
                                                                         -----------  -----------  -----------  -----------
    Total revenues.....................................................       6,445       14,072       23,308       41,562
Cost of revenues:
  Cost of product revenues.............................................         431          982        2,639        5,125
  Cost of service revenues.............................................         200          337          380        1,613
                                                                         -----------  -----------  -----------  -----------
    Total cost of revenues.............................................         631        1,319        3,019        6,738
                                                                         -----------  -----------  -----------  -----------
Gross profit...........................................................       5,814       12,753       20,289       34,824
Operating expenses:
  Research and development.............................................       2,827        5,105        7,117       11,792
  Sales and marketing..................................................       4,711        8,224       11,785       18,959
  General and administrative...........................................       2,374        2,612        2,568        3,782
  Merger related charges...............................................      --           --           --            2,033
  Property rights agreement and related charges........................         500       --           --           --
                                                                         -----------  -----------  -----------  -----------
    Total operating expenses...........................................      10,412       15,941       21,470       36,566
                                                                         -----------  -----------  -----------  -----------
Operating income (loss)................................................      (4,598)      (3,188)      (1,181)      (1,742)
Interest income, net...................................................          91          396        1,356        2,751
                                                                         -----------  -----------  -----------  -----------
Income (loss) before income taxes......................................      (4,507)      (2,792)         175        1,009
Provision for income taxes.............................................      --           --           --              498
                                                                         -----------  -----------  -----------  -----------
Net income (loss)......................................................   $  (4,507)   $  (2,792)   $     175    $     511
                                                                         -----------  -----------  -----------  -----------
                                                                         -----------  -----------  -----------  -----------
Net income (loss) per share............................................   $   (0.07)   $   (0.04)   $    0.00    $    0.01
                                                                         -----------  -----------  -----------  -----------
                                                                         -----------  -----------  -----------  -----------
Shares used in computing net loss per share............................      69,915       69,919       80,832       86,965
 
<CAPTION>
 
                                                                          MARCH 31,   JUNE 30,   SEPT. 30,
                                                                            1996        1996       1996
                                                                         -----------  ---------  ---------
 
<S>                                                                      <C>          <C>        <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Revenues:
  Product revenues.....................................................  $    49,051  $  62,296  $  83,761
  Service revenues.....................................................        7,070     12,710     16,255
                                                                         -----------  ---------  ---------
    Total revenues.....................................................       56,121     75,006    100,016
Cost of revenues:
  Cost of product revenues.............................................        6,811      9,703     10,900
  Cost of service revenues.............................................        1,683      2,325      3,794
                                                                         -----------  ---------  ---------
    Total cost of revenues.............................................        8,494     12,028     14,694
                                                                         -----------  ---------  ---------
Gross profit...........................................................       47,627     62,978     85,322
Operating expenses:
  Research and development.............................................       14,126     17,826     24,211
  Sales and marketing..................................................       25,805     32,506     43,865
  General and administrative...........................................        5,206      6,018      8,286
  Merger related charges...............................................      --           6,100     --
  Property rights agreement and related charges........................      --          --         --
                                                                         -----------  ---------  ---------
    Total operating expenses...........................................       45,137     62,450     76,362
                                                                         -----------  ---------  ---------
Operating income (loss)................................................        2,490        528      8,960
Interest income, net...................................................        2,431      1,462      1,592
                                                                         -----------  ---------  ---------
Income (loss) before income taxes......................................        4,921      1,990     10,552
Provision for income taxes.............................................        1,332      1,084      2,895
                                                                         -----------  ---------  ---------
Net income (loss)......................................................  $     3,589  $     906  $   7,657
                                                                         -----------  ---------  ---------
                                                                         -----------  ---------  ---------
Net income (loss) per share............................................  $      0.04  $    0.01  $    0.09
                                                                         -----------  ---------  ---------
                                                                         -----------  ---------  ---------
Shares used in computing net loss per share............................       85,003     87,937     87,883
</TABLE>
<TABLE>
<CAPTION>
                                                                                                           DECEMBER 31,
                                                                                                               1995
                                                                                                           -------------
<S>                                                                                                        <C>
                                                                                                                (IN
                                                                                                            THOUSANDS)
CONSOLIDATED BALANCE SHEET DATA:
Working capital..........................................................................................    $ 133,052
Total assets.............................................................................................      231,154
Deferred revenues........................................................................................       30,032
Long-term obligations, net of current portion............................................................        1,198
Stockholders' equity.....................................................................................      177,387
 
<CAPTION>
                                                                                                           SEPTEMBER 30,
 
                                                                                                                1996
 
                                                                                                           --------------
 
<S>                                                                                                        <C>
 
CONSOLIDATED BALANCE SHEET DATA:
Working capital..........................................................................................    $   70,571
 
Total assets.............................................................................................       331,748
 
Deferred revenues........................................................................................        75,126
 
Long-term obligations, net of current portion............................................................           659
 
Stockholders' equity.....................................................................................       199,004
 
</TABLE>
 
                                       23
<PAGE>
                                    BUSINESS
 
OVERVIEW
 
    Netscape is  a leading  provider of  open software  for linking  people  and
information  over  intranets and  the Internet.  Netscape develops,  markets and
supports a broad  suite of  enterprise server and  client software,  development
tools  and  commercial applications  to  create a  single  shared communications
platform for network-based applications. Netscape software is based on  industry
standard  protocols and therefore  can be deployed across  a variety of computer
operating systems, hardware  platforms and databases  and can be  interconnected
with   traditional   client/server  applications.   Using   Netscape  solutions,
organizations can extend their internal information systems and applications  to
geographically  dispersed  facilities as  well as  to  third party  partners and
customers. In addition, Netscape's products allow individuals and  organizations
to  access information and  to execute transactions across  the Internet such as
the buying and selling of information, software, merchandise and publications.
 
   
    Netscape released its first product, Navigator 1.0, in December 1994,  which
offered  an easy to use graphical user interface for browsing the World Wide Web
(the "Web"). Since  that time, the  Company has become  increasingly focused  on
offering  user and network services for  use in intranet applications, including
features with e-mail and graphics. The Company currently offers a broad suite of
software products and tools, targeted primarily at corporate intranets, for  use
in  a variety of  information sharing, network  management and commerce-enabling
applications. 92 of the Fortune 100 companies use Netscape products for intranet
or Internet solutions.
    
 
   
    To reach a diverse and worldwide customer base, Netscape delivers its  suite
of  products and  services through  multiple distribution  channels. The Company
offers its products  via a direct  sales force, telesales,  and the Internet  as
well  as  through  resellers  such  as OEMs,  VARs  and  software  retailers. To
accelerate the acceptance of the  Company's products, Netscape has entered  into
reseller  agreements  with leading  telecommunications and  technology companies
with complementary  resources.  These  companies include,  among  others,  AT&T,
Apple,  Compaq, Deutsche Telekom, Digital, France Telecom, Hewlett-Packard, IBM,
Informix, Novell, Olivetti, Siemens, Silicon Graphics, Sybase and Sun.
    
 
INDUSTRY BACKGROUND
 
    In today's increasingly competitive business environment, organizations seek
to leverage their  existing investments  in information  technology and  provide
access  to network resources  and applications across  the enterprise. Disparate
computer operating systems, hardware  platforms and databases have  historically
limited the ability of these organizations to share information most effectively
across the enterprise. Intranets have provided simple services such as messaging
and  publishing to  network users,  and have  begun to  connect closed operating
systems, databases, applications and networks over a common platform. These open
standards-based  intranets  are  designed  to  permit  user  services  such   as
information  sharing, application access and  enterprise calendaring, as well as
network services  such as  network management  and security,  to operate  across
heterogeneous environments.
 
    According  to  Forrester  Research,  an  independent  market  research group
("Forrester"), the intranet and Internet market opportunity is significant. In a
July 1996 report, Forrester reported that approximately 96% of the Fortune  1000
companies  either  have or  are  building an  intranet  and estimated  that $8.5
billion will be spent on intranet and Internet software in the year 1999.
 
RECENT DEVELOPMENTS
 
    PLANNED PRODUCTS AND RELEASES
 
    In October  1996, the  Company announced  a matched  server/client  solution
focused  on the intranet  market as an  upgrade and extension  of its server and
client products. Netscape SuiteSpot  3.0, an upgrade  to Netscape SuiteSpot  2.0
which  is planned  to be commercially  available in  the first half  of 1997, is
designed to  be an  integrated suite  of server  software that  offers  advanced
messaging  and  groupware functionality,  provides  an open  foundation  for the
creation  of   network-based   applications   and   enables   flexible   content
 
                                       24
<PAGE>
management. Netscape Communicator 4.0, an upgrade to Netscape Navigator which is
planned  to be commercially available in the  first half of 1997, is designed to
be a  componentized  suite  of  client  software  for  open  HTML-based  e-mail,
groupware,  authoring,  calendaring  and Web  browsing.  Together,  the Netscape
SuiteSpot 3.0 and  Communicator 4.0  solution are  designed to  offer a  matched
feature  approach  enabling organizations  to  use e-mail,  groupware  and other
enterprise applications across an open network.
 
MATCHED CLIENT/SERVER SOLUTION:
 
    This figure  depicts the  Company's recently  announced matched  server  and
client solution and how the strategy to componentize each piece of functionality
creates  seamless integration between client  and server. Calendar functionality
in the Communicator, for  example, gets matched  with calendar functionality  in
the SuiteSpot 3.0 New Platform any application model:
 
        NETSCAPE SUITESPOT 3.0.
 
    The Company's next-generation server software suite will be comprised of ten
server  and tool  products for building  corporate intranets.  Together with the
announced Netscape Communicator  client, Netscape SuiteSpot  3.0 is expected  to
provide  enterprise  customers  with  an integrated  solution  for  building and
maintaining Web  sites,  open  e-mail, publishing  and  groupware  solutions  on
intranets.  In  addition,  Netscape SuiteSpot  3.0  is designed  to  support the
Netscape  ONE  framework  that   allows  developers  to  build   cross-platform,
network-based applications. Netscape SuiteSpot 3.0 is planned to be commercially
available  in the first half of 1997. Below  is a description of each server and
tool that collectively comprise Netscape SuiteSpot 3.0.
 
        NETSCAPE ENTERPRISE SERVER 3.0.   This enterprise server is designed  to
be the platform that will enable users to share, locate and publish information.
Among  the  features the  Company plans  to  include are  the ability  to manage
documents in a  variety of formats,  including Microsoft Office  and Adobe  PDF,
full-text search capability, agent technology, custom views, access controls and
document  control with versioning. Netscape Enterprise Server 3.0, an upgrade of
Netscape's  currently  shipping  Enterprise  Server   2.0,  is  planned  to   be
commercially available as a standalone product in the first half of 1997.
 
        NETSCAPE  MESSAGING SERVER 3.0.   This server is  designed to expand its
native support  of  Internet  standards  and is  designed  to  extend  beyond  a
traditional  client/server messaging architecture  through interoperability with
native Internet and proprietary LAN-based  mail systems. Among the features  the
Company plans to include are LDAP directory services support, offline and mobile
user support, tools for migration from proprietary messaging solutions and IMAP4
and  POP3 support.  Netscape Messaging Server  3.0, an upgrade  to Netscape Mail
Server 2.0, is planned to be  commercially available as a standalone product  in
the first half of 1997.
 
        NETSCAPE COLLABRA SERVER 3.0.  This open and secure discussion server is
designed to allow group-to-group collaboration and knowledge-sharing among teams
both inside and outside an organization. Among the features the Company plans to
include  are support for full-text search across all discussion forums, enhanced
encryption, single point administration  and advanced replication  capabilities.
Netscape  Collabra Server  3.0, an upgrade  to Netscape Collabra  Server 2.1, is
planned to be commercially available as  a standalone product in the first  half
of 1997.
 
        NETSCAPE  CALENDAR SERVER 1.0.   This server is designed  to be the open
standards-based server  for calendaring  and scheduling  across the  enterprise.
Among  the features the Company plans to  include are access controls to protect
data and enterprise scalability. Netscape Calendar  Server 1.0 is planned to  be
commercially available as a standalone product in the first half of 1997.
 
        NETSCAPE  MEDIA SERVER  1.0.   This server is  designed to  be the audio
broadcasting and publishing extension to  the Netscape Enterprise Server.  Among
the features the Company plans to include are the
 
                                       25
<PAGE>
ability to deliver audio across a TCP/IP network, integration of audio with text
and  graphics  and  support  for industry-standard  protocols  and  file formats
including RTSP.  Netscape  Media  Server  1.0  is  planned  to  be  commercially
available as a standalone product in the first half of 1997.
 
        NETSCAPE CATALOG SERVER 1.0.  This is the automated search and discovery
server  for  creating,  managing  and maintaining  an  online  catalog  of files
residing on  enterprise intranets  and  the Internet.  This server  features  an
automated  catalog that  is easy  to manage  and customize  with the  ability to
catalog in  multiple file  formats.  Netscape Catalog  Server 1.0  is  currently
available  in  beta version  and is  planned  to be  commercially released  as a
standalone product by the end of 1996.
 
        NETSCAPE DIRECTORY SERVER 1.0.  This  is the server for managing  "white
pages"   information  such  as  names,   e-mail  addresses,  phone  numbers  and
certificates. Its  features include  universal access  to directory  information
through  LDAP, support  for distributed  searches, replication  capabilities and
safeguarding of directory information using  both access control lists and  SSL.
Netscape  Directory Server  1.0 is  currently available  in beta  version and is
planned to be commercially released by the end of 1996.
 
        NETSCAPE CERTIFICATE SERVER 1.0.   This server enables organizations  to
issue, sign and manage public-key certificates. Its features include single user
login,  SSL support and software signing using the industry-standard RSA digital
signature algorithm. Netscape Certificate Server  1.0 is currently available  in
beta  version and is planned to be commercially released as a standalone product
in the first half of 1997.
 
        NETSCAPE PROXY SERVER  2.5.  This  server is designed  to replicate  and
filter  access to content on an intranet or the Internet. Among the features the
Company plans to include  are access and control  points for encrypted  traffic,
automatic proxy configuration and replication on demand and on command. Netscape
Proxy  Server 2.5,  an upgrade to  Netscape Proxy  Server 2.0, is  planned to be
commercially available as a standalone product in the first half of 1997.
 
        NETSCAPELIVEWIRE/NETSCAPE LIVEWIRE PRO.   These are visual tools  suites
designed  for  managing Web  sites  and creating  online  applications. Features
include the  ability  to  create  and  import  Web  page  content  with  a  site
downloader,  a JavaScript  compiler and interoperability  with Oracle, Informix,
Sybase and ODBC  databases. Both Netscape  LiveWire 1.01 and  LiveWire Pro  1.01
were commercially released in June 1996.
 
        NETSCAPE COMMUNICATOR
 
    The  Company's next  generation client product,  Netscape Communicator, will
aggregate a set  of features for  the user  to share and  access information  on
intranets  or  the Internet.  Additionally, the  Company announced  the Netscape
Communicator Professional Edition, which is expected to include calendaring  and
centralized  management  capabilities.  The Netscape  Communicator  and Netscape
Communicator Professional  are  scheduled to  enter  beta phase  in  the  fourth
quarter  of 1996 and planned  to be commercially available  in the first half of
1997. Below  is  a description  of  each component  that  collectively  comprise
Netscape Communicator.
 
        NETSCAPE  NAVIGATOR 4.0.  This component is designed to enable access to
information and network  applications on  intranets and the  Internet using  the
intuitive  Netscape Navigator interface. Among the features the Company plans to
include are  an  improved  user  interface,  JavaScript  style  sheets,  layers,
improved  Java  performance and  platform  support, multiple  user  profiles and
embedded object support.  The Netscape  Navigator 4.0 component  is designed  to
offer  a point-and-click graphical user interface that enables users to navigate
the Internet's  vast  array of  network  resources. Netscape  Navigator  4.0  is
planned  to be an  extension of the browser  functionality in Netscape Navigator
3.0.
 
        NETSCAPE MESSENGER.   This  component is  designed to  enable  corporate
e-mail  built  on  open  standards.  Among  the  features  to  be  included  are
integration with Netscape Composer to create HTML mail with embedded objects and
images, S/MIME  encrypted  and  digitally signed  messages,  LDAP  Internet-wide
 
                                       26
<PAGE>
directory  technology, additional support for IMAP4, POP3 and SMTP/MIME, message
filters,  an  integrated  spelling  checker,  hierarchical  folders  and  search
capabilities.  Netscape Messenger will be an extension of the mail functionality
in Netscape Navigator 3.0.
 
        NETSCAPE COLLABRA.   This  component is  designed to  enable  enterprise
discussion  groups based on  Internet standards. Among  the features the Company
plans to include are NNTP support for threaded discussion groups, HTML  content,
forum  names for discussions, access controls for private discussions, searching
across all forums and offline reading and posting.
 
        NETSCAPE COMPOSER.  This component is designed to be an HTML editor  for
Web pages, e-mail and discussion groups. Among the features the Company plans to
include  are one-button publishing, formatting  which includes fonts and styles,
drag-and-drop images,  an  extensible  editor  plug-in  API  and  FTP  and  HTTP
publishing  support. Netscape  Composer is  designed to  be an  extension of the
authoring functionality in Netscape Navigator Gold.
 
        NETSCAPE  CONFERENCE.    This  component  is  designed  to  enable  live
connection   of  people   and  information  with   Internet  telephones,  shared
whiteboards and file transfer. Among the  features the Company plans to  include
are  audio conferencing, voicemail, collaborative browsing, full-duplex echo and
silence suppression,  H.323  support  and integration  with  Netscape  Messenger
address book. Netscape Conference is designed to be an extension of the Netscape
CoolTalk plug-in for Netscape Navigator 3.0.
 
        NETSCAPE  CALENDAR.   This  component is  designed to  enable enterprise
calendaring and scheduling. Among the features the Company plans to include  are
local  and  remote server  searching, schedule  delegation, offline  support and
drag-and-drop events. Netscape  Calendar will  be bundled  exclusively with  the
Netscape Communicator Professional Edition.
 
        NETSCAPE  AUTOADMIN.  This  component is designed  to enable centralized
management to install, deploy and configure the Netscape Communicator. Among the
features the Company plans to include are automatic download and installation of
new Netscape Communicator plug-ins and components and the capability to restrict
the downloading of such components to those authorized. Netscape AutoAdmin  will
be  bundled  exclusively with  the  Netscape Communicator  Professional Edition.
Netscape  AutoAdmin  is  designed  to  be  an  extension  of  the  administrator
functionality of the Netscape Dial-Up Navigator 3.0.
 
   
    THE  FOREGOING  SECTION  CONTAINS FORWARDING-LOOKING  STATEMENTS  WITHIN THE
MEANING OF SECTION 27A OF THE SECURITIES ACT AND SECTION 21E OF THE EXCHANGE ACT
REGARDING  THE   COMPANY'S   PLANNED  PRODUCTS   AND   ENHANCEMENTS,   INCLUDING
FORWARD-LOOKING STATEMENTS REGARDING PLANNED FEATURES AND PLANNED RELEASE DATES.
ACTUAL   RESULTS  COULD  DIFFER   MATERIALLY  FROM  THOSE   ANTICIPATED  BY  THE
FORWARD-LOOKING STATEMENTS  IN THE  FOREGOING SECTION,  PARTICULARLY THOSE  WITH
RESPECT  TO PLANNED RELEASE DATES AND  PLANNED FEATURES. THE RESULTS ANTICIPATED
BY SUCH FORWARD-LOOKING STATEMENTS ARE  SUBJECT TO NUMEROUS DIFFERENT RISKS  AND
UNCERTAINTIES  AS  SET FORTH  IN "RISK  FACTORS",  SPECIFICALLY THE  RISK FACTOR
ENTITLED "NEW PRODUCT  DEVELOPMENT AND TECHNOLOGICAL  CHANGE." FOR EXAMPLE,  THE
COMPANY'S  ABILITY TO RELEASE SUCH PLANNED  PRODUCTS AND ENHANCEMENTS WITH THEIR
PLANNED FEATURES IN  A TIMELY  AND COST-EFFECTIVE MANNER,  OR AT  ALL, COULD  BE
MATERIALLY  ADVERSELY  AFFECTED  BY  ANY  TECHNICAL  OR  OTHER  PROBLEMS  IN, OR
DIFFICULTIES WITH, SUCH PLANNED PRODUCTS  OR ENHANCEMENTS, THIRD PARTY  PRODUCTS
OR  TECHNOLOGIES WHICH  RENDER THE  COMPANY'S PLANNED  PRODUCTS AND ENHANCEMENTS
OBSOLETE, THE  UNAVAILABILITY OF  REQUIRED THIRD  PARTY TECHNOLOGY  LICENSES  ON
COMMERCIALLY  REASONABLE  TERMS,  THE  LOSS  OF  KEY  RESEARCH  AND  DEVELOPMENT
PERSONNEL, THE INABILITY OR FAILURE  TO RECRUIT AND RETAIN ADDITIONAL  QUALIFIED
RESEARCH AND DEVELOPMENT PERSONNEL, OR THE ADOPTION OF COMPETING STANDARDS.
    
 
    RECENT PRICING ANNOUNCEMENTS
 
    In  conjunction with  the announcement of  the Company's  matched server and
client solution, the Company announced a  new pricing program that reflects  the
enterprise  scalability  of the  Company's products.  The Company's  new pricing
program will  make its  Netscape  SuiteSpot 3.0  and Netscape  Communicator  4.0
products  available on  a per seat  basis. In addition,  the Netscape Messaging,
Netscape Collabra,  Netscape Directory  and Netscape  Calendar servers  will  be
available as standalone products with a certain
 
                                       27
<PAGE>
number  of client access licenses ("CALs").  As customers increase the number of
users to prescribed levels, additional  incremental license charges will  apply,
subject  to volume and other discounts. This pricing model is noted in the table
below.
 
                                      [B]
 
NETSCAPE LICENSE
 
    This figure depicts  the Company's pricing  model for Per  Seat pricing  for
customer Seats above 500.
 
    The  Company's server and client product lines account for the vast majority
of the Company's total revenues. From time to time, the Company has in the  past
changed,  and  may  in the  future  change,  the pricing  of  its  products. The
Company's recent change  in pricing  announced in  October 1996  and any  future
pricing  changes  could  materially  adversely  affect  sales  of  the Company's
products and consequently  materially adversely affect  the Company's  business,
operating results and financial condition.
 
    NETSCAPE ONE
 
    In   July  1996,  Netscape  announced  the  creation  of  its  Open  Network
Environment ("Netscape ONE"), which provides a framework for developers to build
cross-platform, network-based applications. Netscape ONE is intended to  promote
a standards-based approach to managing distributed objects on the network and to
serve  as an alternative to  platform-specific application development. Netscape
ONE incorporates technologies  such as  Java Script  1.1, HTTP  and HTML,  among
others,  and, in combination with CORBA, permits developers to write distributed
applications and  integrate information  systems  running on  a broad  range  of
operating systems. More than 50 companies have announced their intent to support
and  develop applications using  Netscape ONE. These  companies include software
applications and tools  vendors such as:  Adobe Systems Incorporated  ("Adobe"),
Autodesk  Inc.  ("Autodesk"), Borland  International Inc.  ("Borland"), Digital,
Hewlett-Packard, Informix, Intuit Inc.,  Lotus, Macromedia Inc.  ("Macromedia"),
Silicon  Graphics,  Symantec Corporation  and Sun.  The  Company has  posted the
source code for  Netscape ONE, a  comprehensive whitepaper, and  a Netscape  ONE
Software Development Kit ("SDK") on its Internet Web site in order to facilitate
third-party acceptance of the Netscape ONE approach.
 
    NETSCAPE APPFOUNDRY
 
    In  early  September  1996,  Netscape announced  the  AppFoundry  Program to
demonstrate applications developed using the Netscape ONE framework.  Initially,
the  AppFoundry Program included over 20  third party business applications that
could be downloaded  from the  Netscape Internet Web  site at  no charge.  These
applications  can be deployed  and customized by  an enterprise, and demonstrate
the speed at  which applications can  be built using  an open  Internet-standard
platform. Applications include programs for
 
                                       28
<PAGE>
   
internal  purchasing, travel  and expense  reporting, job  posting and applicant
processing and  sales  trend  analysis.  The combination  of  Netscape  ONE  and
AppFoundry  create  an  environment  where the  enterprise  customer  can enable
communication and share information and applications within its own  departments
as  well as with its third party  partners and customers through a single common
intranet infrastructure.
    
 
    Additionally, the Company launched Netscape AppFoundry Online, which holds a
collection of downloadable  applications, maintains  a "What's  New" section  to
keep  developers up to date on the  Company's announcements in both the Netscape
ONE and AppFoundry space, and hosts online question and answer discussion forums
for IS professionals  and corporate  developers. Since September,  more than  10
additional  applications have  been added  to the  AppFoundry showcase including
work from Arbor Software, Dun and Bradstreet and Scopus Inc.
 
    ACQUISITIONS AND JOINT VENTURES
 
    In April 1996, the Company entered into a business combination with  InSoft,
a   privately-held  company  that   provides  network-based  communications  and
collaborative multimedia software for the enterprise. Netscape purchased all  of
the  outstanding capital stock and assumed  all of the outstanding stock options
of InSoft. The business combination was accounted for as a pooling of interests.
Using InSoft's technology as  a foundation, the  Company has announced  Netscape
LiveMedia  and Netscape Media  Server, a standards-based  framework for bringing
real-time audio and video to the Netscape open software platform.
 
    In May 1996,  the Company  entered into  a business  combination with  Paper
Software,  a privately-held company  that provides distributed three-dimensional
graphics and maker of WebFX  Virtual Reality Markup Language ("VRML")  software.
Netscape  purchased all of the outstanding  capital stock of Paper Software. The
business combination was accounted for as  a pooling of interests. Netscape  has
integrated  Paper Software's core technology  into Netscape Navigator and, using
Paper Software's core technology as a foundation, has announced Netscape Live3D,
technology that enables  industry-standard VRML graphics  to be integrated  into
the Netscape software platform.
 
    In May 1996, the Company entered into a business combination with Netcode, a
privately-held  company  that created  a  Java-based object  toolkit  and visual
interface builder for  developing Java applications.  Netscape purchased all  of
the  outstanding capital  stock and  assumed all  of the  outstanding options of
Netcode. The business combination was accounted  for as a pooling of  interests.
Netscape  develops and  markets Netcode's products  as part of  Netscape ONE and
intends to integrate Netcode's core technology into future Netscape products.
 
    In April 1996, the Company entered into a joint venture with GE  Information
Services  ("GEIS") to form Actra Business Systems L.L.C. that intends to develop
and market software for Internet-based business-to-business electronic commerce.
 
    In August  1996, the  Company  entered into  a  joint venture  called  Navio
Communications,  Inc.  ("Navio"), an  independent  Internet software  company in
which Netscape has  an equity position.  Navio plans to  deliver core,  scalable
technology  for the Netscape Navigator for a wide-variety of consumer and non-PC
products such as televisions,  telephones, set-top boxes,  game players and  the
new breed of network computers and information appliances.
 
    The Company will continue to consider acquisitions, investments or strategic
alliances that it believes can complement its overall business strategy.
 
                                       29
<PAGE>
                                   MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
    The  executive officers  and directors  of the  Company, and  their ages and
positions as of September 30, 1996, are as follows:
 
<TABLE>
<CAPTION>
                       NAME                            AGE                        POSITION(S)
- --------------------------------------------------  ---------  --------------------------------------------------
<S>                                                 <C>        <C>
James H. Clark....................................         52  Chairman of the Board
James L. Barksdale................................         53  President, Chief Executive Officer and Director
Marc L. Andreessen................................         25  Senior Vice President, Technology and Director
Noreen G. Bergin..................................         36  Vice President and Corporate Controller
Peter L.S. Currie.................................         40  Senior Vice President and Chief Financial Officer
Larry K. Geisel...................................         55  Senior Vice President, Information Systems and
                                                                Chief Information Officer
Eric A. Hahn......................................         36  Senior Vice President and General Manager of the
                                                                Server Product Division(1)
Michael J. Homer..................................         38  Senior Vice President, Marketing
Roberta R. Katz...................................         48  Senior Vice President, General Counsel and
                                                                Secretary
Kandis Malefyt....................................         42  Senior Vice President, Human Resources
Conway Rulon-Miller...............................         45  Senior Vice President, Sales and Field Operations
Richard M. Schell.................................         46  Senior Vice President and General Manager of the
                                                                Client Product Division(1)
James C.J. Sha....................................         46  Senior Vice President and General Manager,
                                                                Integrated Applications
L. John Doerr(2)..................................         45  Director
John E. Warnock(2)................................         56  Director
</TABLE>
 
- ---------
(1) Title effective November 1, 1996
(2) Member of the Audit and Compensation Committees
 
    Dr. Clark  co-founded  the Company  in  April 1994  and  has served  as  its
Chairman  of the  Board since  its inception. From  inception of  the Company to
January 1995, Dr. Clark served as  the President and Chief Executive Officer  of
the Company. From 1981 to 1994, Dr. Clark was Chairman of the Board of Directors
of  Silicon Graphics, Inc.  ("Silicon Graphics"), a  computer systems company he
founded in 1981.  Dr. Clark also  served as Chief  Technical Officer of  Silicon
Graphics from 1981 to 1987. Prior to founding Silicon Graphics, Dr. Clark was an
associate  professor at  Stanford University. Dr.  Clark holds a  Ph.D. from the
University of Utah and an M.S. and a B.S. from the University of New Orleans.
 
    Mr. Barksdale joined  the Company  in January  1995 as  President and  Chief
Executive  Officer. He  has served  as a director  of the  Company since October
1994. From January 1992 to January  1995, Mr. Barksdale served as President  and
Chief  Operating Officer, and, as of September 1994, Chief Executive Officer, of
AT&T  Wireless   Services  (formerly,   McCaw  Cellular   Communications,   Inc.
(collectively, "McCaw")), a cellular telecommunications company. From April 1983
to January 1992, Mr. Barksdale served as Executive
 
                                       30
<PAGE>
Vice  President  and  Chief  Operating Officer  of  Federal  Express Corporation
("Federal Express") an express package delivery company. From 1979 to 1983,  Mr.
Barksdale  served as Chief Information Officer of Federal Express. Mr. Barksdale
also held  various management  positions, including  Chief Information  Officer,
with  Cook Industries Inc.,  during the mid-1970s  and was employed  by IBM from
1965 to 1972. He holds a B.A. from the University of Mississippi. Mr.  Barksdale
serves  as a director of 3Com  Corporation, Harrah's Entertainment, Inc., Robert
Mondavi Corp. and @Home Corporation.
 
    Mr. Andreessen co-founded the Company in April 1994. He currently serves  as
Senior  Vice President, Technology and has been  a director of the Company since
September 1994. He received a B.S.  from the University of Illinois in  December
1993, where he co-authored the original NCSA Mosaic Web browser.
 
    Ms.  Bergin  joined  the Company  in  November  1995 as  Vice  President and
Corporate Controller. From November 1991 to November 1995, Ms. Bergin served  as
Vice   President,  Finance   and  Corporate   Controller  of   Frame  Technology
Corporation, a document publishing software firm. Prior to that time, she served
as Corporate  Controller  of Boole  &  Babbage, Inc.,  a  mainframe  performance
software  company  for five  years. Ms.  Bergin  holds a  B.A. from  Santa Clara
University.
 
    Mr. Currie joined the Company as Vice President and Chief Financial  Officer
in  April 1995 and  was elected to  Senior Vice President  in January 1996. From
April 1989 to March 1995, Mr. Currie held various management positions at McCaw,
including Executive  Vice  President and  Chief  Financial Officer,  and  as  of
February  1993, Executive Vice President of  Corporate Development. From 1982 to
1989, he held various positions at Morgan Stanley & Co. Incorporated. Mr. Currie
holds an M.B.A. from Stanford University and a B.A. from Williams College.
 
    Mr. Geisel  joined the  Company  in March  1996  as Senior  Vice  President,
Information Systems and Chief Information Officer. From June 1994 to March 1996,
Mr.  Geisel served  as Executive Vice  President, Global  Solutions Delivery for
Xerox Corporation ("Xerox"), an office equipment company. From May 1993 to  June
1994,  Mr. Geisel was a consultant. From September 1992 to June 1993, Mr. Geisel
served as President and Chief Executive Officer of White Pine Software, Inc.,  a
desktop connectivity software company. From February 1987 to September 1992, Mr.
Geisel  was  President and  Chief  Executive Officer  of  IIS Inc.,  a software,
systems and information services  firm he founded in  1987. Mr. Geisel holds  an
M.S.E. and a B.S.E. from Arizona State University.
 
    Mr.  Hahn joined the Company in  November 1995 as Vice President, Enterprise
Technology,  in  connection  with  the  Company's  acquisition  of  Collabra,  a
collaborative computing software company, where Mr. Hahn served as President and
Chief  Executive  Officer from  February  1993 to  November  1995. Mr.  Hahn was
elected to Senior Vice President in January 1996 and in October 1996 was elected
to Senior Vice  President and General  Manager of the  Server Product  Division.
From September 1992 to February 1993, Mr. Hahn was employed by Merrill, Pickard,
Anderson  & Eyre,  a venture  capital firm.  From June  1990 to  August 1992, he
served as Vice  President, General  Manager of  the cc:Mail  Division of  Lotus.
Prior  to that  time, he  served as Vice  President and  General Manager, Server
Products Division at Convergent Technologies/Unisys Corporation. Mr. Hahn  holds
a B.S. from the Worcester Polytechnic Institute.
 
    Mr.  Homer joined the  Company in October 1994  as Vice President, Marketing
and was elected to  Senior Vice President  in January 1996.  From April 1994  to
October  1994, Mr. Homer was  a consultant. From August  1993 to April 1994, Mr.
Homer served  as  Vice President,  Engineering  at EO  Corporation,  a  handheld
computer  manufacturer, and  from July  1991 to  July 1993,  Mr. Homer  was Vice
President, Marketing at  GO Corporation,  a pen-based software  company. He  had
previously  been Director of  Product Marketing at Apple,  where he held various
technical and marketing positions from 1982 through 1991. Mr. Homer holds a B.S.
from the University of California, Berkeley.
 
    Ms. Katz joined the Company in  May 1995 as Vice President, General  Counsel
and  Secretary and was  elected to Senior  Vice President in  January 1996. From
March 1993 until joining the Company,  Ms. Katz served as Senior Vice  President
and  General  Counsel  of McCaw.  In  addition,  from March  1992  until joining
 
                                       31
<PAGE>
the Company, Ms. Katz served as Senior Vice President and General Counsel of LIN
Broadcasting Corporation, a subsidiary of McCaw.  Prior to March 1992, Ms.  Katz
was  in private legal  practice, most recently as  a partner in  the law firm of
Heller, Ehrman,  White  & McAuliffe.  Ms.  Katz is  a  Fellow of  the  Discovery
Institute  and serves  as a  member of  the Board  of Directors  of the Software
Publishers Association. Ms. Katz holds a J.D. from the University of  Washington
School  of  Law,  a  Ph.D.  from Columbia  University,  an  M.A.  from  New York
University and a B.A. from Stanford University.
 
    Ms. Malefyt joined  the Company in  December 1994 as  Vice President,  Human
Resources  and was elected  to Senior Vice  President in January  1996. From May
1988 to December  1994, Ms.  Malefyt served as  a Director,  Human Resources  at
Silicon  Graphics.  Prior to  that  time, she  served  as Vice  President, Human
Resources at ISI. Ms. Malefyt holds an  M.A. from Antioch University and a  B.A.
from Harding University.
 
    Mr. Rulon-Miller joined the Company in October 1994 as Vice President, Sales
and  Field Operations and was elected to  Senior Vice President in January 1996.
From December 1992  to October 1994,  Mr. Rulon-Miller was  President and  Chief
Executive  Officer  of  Software  Alliance  Corp.,  a  software  company  and  a
subsidiary of  Teknekron  Communications  Systems  Inc.  From  October  1986  to
December  1992, he served as Vice President, Sales, of North American Operations
of NeXT Software, Inc., a software company. Mr. Rulon-Miller has previously held
management positions at  Tandem Computers,  Inc., American  Express Company  and
IBM. Mr. Rulon-Miller holds a B.A. from Princeton University.
 
    Dr. Schell joined the Company in October 1994 as Vice President, Engineering
and  was elected to Senior Vice President  in January 1996. In October 1996, Dr.
Schell was elected to the position of Senior Vice President and General  Manager
of  the Client Product Division.  From January 1993 to  October 1994, Dr. Schell
was  employed  by  Symantec,   a  software  company,   most  recently  as   Vice
President/General  Manager of the Central Point Division (formerly Central Point
Software, Inc.). From March 1989 to December 1992, he served as Vice  President,
Languages and dBase at Borland, a database software company. Prior to that time,
Dr.  Schell held various management positions at Sun and Intel. Dr. Schell holds
a Ph.D., an M.S. and a B.A. from the University of Illinois.
 
    Mr. Sha joined  the Company  in August 1994  as Vice  President and  General
Manager,  Integrated Applications  and was elected  to Senior  Vice President in
January 1996. From June 1990 to August  1994, Mr. Sha served as Vice  President,
Unix  Division at Oracle,  a database software  company. From June  1986 to June
1990, he served as Vice President/General Manager, Advanced Systems Division  at
Wyse  Technology,  Inc.  Mr.  Sha  holds  an  M.S.E.E.  from  the  University of
California, Berkeley, an M.B.A. from Santa Clara University and a B.S.E.E.  from
National Taiwan University.
 
    Mr. Doerr has been a director of the Company since September 1994. Mr. Doerr
has  been  a general  partner of  Kleiner  Perkins Caufield  & Byers,  a venture
capital firm, since September 1980. Prior to joining Kleiner Perkins Caufield  &
Byers,  Mr. Doerr  was employed  by Intel for  five years.  He is  a director of
Intuit, Macromedia, Platinum Software,  Inc. and Shiva  Corporation, as well  as
several  private companies. He holds an  M.B.A. from the Harvard Business School
and an M.E.E. and a B.S.E.E. from Rice University.
 
    Dr. Warnock has been a director of the Company since April 1995. Dr. Warnock
is a founder  of Adobe, a  software company, and  has been its  Chairman of  the
Board  since  1989. He  has  served as  Adobe's  Chief Executive  Officer  and a
director since October  1982 and was  its President from  December 1982  through
March  1989. Prior to founding Adobe, Dr. Warnock was principal scientist of the
Imaging Sciences  Laboratory at  Xerox's  Palo Alto  Research  Center. He  is  a
director  of  Adobe,  Evans  & Sutherland  Computer  Corporation  and  Red Brick
Systems, Inc. Dr. Warnock holds a Ph.D., an M.S. and a B.S. from the  University
of Utah.
 
                                       32
<PAGE>
                       PRINCIPAL AND SELLING STOCKHOLDERS
 
    The  following  table sets  forth certain  information  with respect  to the
beneficial ownership of the Company's Common Stock as of September 30, 1996  and
as  adjusted to  reflect the sale  of Common  Stock offered hereby  for (i) each
person or entity who is known by the Company to beneficially own more than 5% of
the outstanding  Common  Stock  of  the Company,  (ii)  each  of  the  Company's
directors, (iii) the Company's Chief Executive Officer and each of the four most
highly  compensated executive officers  during the year  ended December 31, 1995
(the "Named Officers"), (iv) each Selling Stockholder, and (v) all directors and
executive officers of the Company as a group:
<TABLE>
<CAPTION>
                                                        SHARES BENEFICIALLY OWNED              SHARES BENEFICIALLY OWNED
                                                          PRIOR TO OFFERING(1)       SHARES        AFTER OFFERING(1)
                                                        -------------------------    BEING     -------------------------
DIRECTORS, OFFICERS AND 5% STOCKHOLDERS                    NUMBER       PERCENT     OFFERED       NUMBER       PERCENT
- ------------------------------------------------------  ------------  -----------  ----------  ------------  -----------
<S>                                                     <C>           <C>          <C>         <C>           <C>
James H. Clark(2) ....................................    15,915,000       18.8%       --        15,915,000       18.4%
 c/o Netscape Communications Corporation
 501 East Middlefield Road
 Mountain View, CA 94043
L. John Doerr(3) .....................................     8,907,009       10.5        --         8,907,009       10.3
 Kleiner Perkins Caufield & Byers
 4 Embarcadero Center, Suite 3520
 San Francisco, CA 94111
James L. Barksdale(4) ................................     5,232,000        6.2        --         5,232,000        6.1
 c/o Netscape Communications Corporation
 501 East Middlefield Road
 Mountain View, CA 94043
John E. Warnock(5)....................................     1,797,163        2.1       888,890       908,273        1.0
Marc L. Andreessen(6).................................     1,501,220        1.8        --         1,501,220        1.7
James C.J. Sha(7).....................................     1,200,776        1.4        --         1,200,776        1.4
Richard M. Schell(8)..................................       623,748       *           --           623,748       *
Michael J. Homer(9)...................................       577,322       *           --           577,322       *
Conway Rulon-Miller(10)...............................       487,100       *           --           487,100       *
All directors and executive officers as a group (15
 persons)(11).........................................    37,706,583       44.6       888,890    36,795,475       42.5
 
<CAPTION>
 
SELLING STOCKHOLDERS
- ------------------------------------------------------
<S>                                                     <C>           <C>          <C>         <C>           <C>
Adobe Systems Incorporated(5).........................     1,797,163        2.1       888,890       908,273        1.0
TCI Netscape Holdings, Inc............................     1,777,780        2.1     1,022,218       755,562       *
Knight-Ridder Investment Company......................       888,892        1.1       888,892       --           --
The Hearst Corporation................................       888,892        1.1       200,000       688,892       *
</TABLE>
 
- ---------
*   Less than 1%.
 
(1) The number  and percentage  of shares  beneficially owned  is determined  in
    accordance  with Rule 13d-3 of the Exchange  Act, and the information is not
    necessarily indicative of beneficial ownership for any other purpose.  Under
    such  rule,  beneficial  ownership  includes  any  shares  as  to  which the
    individual has sole or shared voting power or investment power and also  any
    shares which the individual has the right
 
                                       33
<PAGE>
    to  acquire within 60 days of September 30, 1996 through the exercise of any
    stock option or other  right. Unless otherwise  indicated in the  footnotes,
    each person has sole voting and investment power (or shares such powers with
    his or her spouse) with respect to the shares shown as beneficially owned.
 
(2)  Includes 404,325 shares subject  to a repurchase right  of the Company upon
    cessation of Mr. Clark's service to the Company.
 
   
(3) Includes 8,360,000 shares, 440,000 shares and 63,368 shares held by  Kleiner
    Perkins Caufield & Byers VII, KPCB Information Sciences Zaibatsu Fund II and
    Kleiner  Perkins  Caufield &  Byers  VI, respectively.  Also  includes 8,450
    shares, 2,828 shares and 14,980 shares held by Mr. Doerr, the L. John  Doerr
    Trust,  and  L. John  Doerr III  and Ann  Howland Doerr  as trustees  of the
    Vallejo  Ventures  Trust   dated  2/12/96,  respectively,   and  an   option
    exercisable for 17,383 shares within 60 days of September 30, 1996 issued to
    Mr.  Doerr  under the  1995 Director  Option  Plan. Mr.  Doerr is  a general
    partner of  KPCB VII  Associates,  which is  a  general partner  of  Kleiner
    Perkins Caufield & Byers VII and KPCB Information Sciences Zaibatsu Fund II,
    and  Mr. Doerr is also  a general partner of KPCB  VI Associates, which is a
    general partner of Kleiner Perkins Caufield & Byers VI. Mr. Doerr  disclaims
    beneficial  ownership  of  the shares  held  by  such funds  except  for his
    proportional interest therein.
    
 
(4) Includes (i) 2,552,000 shares subject  to a repurchase right of the  Company
    upon  cessation of  Mr. Barksdale's service  to the Company  and (ii) 80,000
    shares transferred to  a family  member of Mr.  Barksdale, as  to which  Mr.
    Barksdale disclaims beneficial ownership.
 
(5)  Includes  1,777,780 shares  held  by Adobe  and  2,000 shares  held  by Dr.
    Warnock. Also includes  an option  exercisable for 17,383  shares within  60
    days  of September 30,  1996 issued to  Dr. Warnock under  the 1995 Director
    Option Plan. Dr. Warnock is a founder  of Adobe and currently serves as  its
    Chairman of the Board and Chief Executive Officer. Dr. Warnock may therefore
    be  deemed to share voting  and investment power with  respect to the shares
    held by Adobe.
 
(6) Includes 840,000 shares  subject to a repurchase  right of the Company  upon
    cessation of Mr. Andreessen's service to the Company.
 
(7)  Includes 400,000 shares subject  to a repurchase right  of the Company upon
    cessation of Mr. Sha's service to the Company.
 
(8) Includes 416,000 shares  subject to a repurchase  right of the Company  upon
    cessation of Mr. Schell's service to the Company.
 
(9)  Includes 312,000 shares subject  to a repurchase right  of the Company upon
    cessation of Mr. Homer's service to the Company, and 200,000 shares issuable
    upon the exercise of an immediately exercisable option.
 
(10) Includes 416,000 shares subject to  a repurchase right of the Company  upon
    cessation of Mr. Rulon-Miller's service to the Company.
 
(11)  Includes (i) 200,000  shares issuable upon  currently exercisable options,
    (ii) options exercisable for 34,766 shares  within 60 days of September  30,
    1996,  (iii) an aggregate of 5,340,325  shares subject to certain repurchase
    rights of the Company upon cessation of certain executive officers'  service
    to  the Company, which  repurchase rights generally  lapse at a  rate of two
    percent per month, (iv) 10,641,148 shares owned by entities affiliated  with
    Messrs.  Doerr and  Warnock prior to  the offering and  (v) 9,752,258 shares
    owned by  entities  affiliated with  Messrs.  Doerr and  Warnock  after  the
    offering.
 
                                       34
<PAGE>
                CERTAIN UNITED STATES FEDERAL TAX CONSIDERATIONS
                      FOR NON-U.S. HOLDERS OF COMMON STOCK
 
    The  following  is a  general discussion  of  certain United  States federal
income and estate tax  consequences of the ownership  and disposition of  Common
Stock  by a  person that, for  United States  federal income tax  purposes, is a
non-resident alien individual, a foreign  corporation, a foreign partnership  or
an estate or trust, in each case not subject to U.S. federal income tax on a net
income  tax basis in  respect of income  or gain from  Common Stock (a "non-U.S.
holder"). This discussion  is based  on the Internal  Revenue Code  of 1986,  as
amended,  Treasury  regulations  thereunder,  and  administrative  and  judicial
interpretations as  of  the date  hereof,  all of  which  may be  changed.  This
discussion  does not address all  the aspects of U.S.  federal income and estate
taxation that may be relevant to  non-U.S. holders in light of their  particular
circumstances, or to certain types of holders subject to special treatment under
United  States federal  income tax  laws (such  as life  insurance companies and
dealers in securities). Nor does it  address tax consequences under the laws  of
any  state, municipality or other  taxing jurisdiction or under  the laws of any
country other than the United States.
 
    Prospective  holders  should  consult  their  own  tax  advisors  about  the
particular tax consequences to them of holding and disposing of Common Stock.
 
DIVIDENDS
 
    Generally,  dividends  paid to  a non-U.S.  holder of  Common Stock  will be
subject to United States  federal withholding tax  at a 30%  rate or such  lower
rate  as  may  be specified  by  an  applicable income  tax  treaty,  unless the
dividends are effectively  connected with  the conduct  of a  trade or  business
within  the United States (or alternatively  are attributable to a United States
permanent establishment of such  holder, if an applicable  income tax treaty  so
requires  as a condition for the non-U.S.  holder to be subject to United States
income  tax  on  a  net  income  basis  in  respect  of  such  dividends).  Such
"effectively  connected"  dividends, or  dividends  attributable to  a permanent
establishment, are subject to tax at rates applicable to United States citizens,
resident aliens and domestic United  States corporations, and are not  generally
subject  to withholding. Effectively connected  dividends received by a non-U.S.
corporation may be subject to an additional  "branch profits tax" at a 30%  rate
(or  a lower rate under an applicable income tax treaty) when such dividends are
deemed repatriated from the United States.
 
    Under current  U.S.  Treasury  regulations, dividends  paid  to  an  address
outside  the United  States in a  foreign country are  presumed to be  paid to a
resident of such  country for  purposes of  the withholding  tax. Under  current
interpretation  of U.S.  Treasury regulations,  the same  presumption applies to
determine the applicability of a reduced rate of withholding under a tax treaty.
Thus, non-U.S.  holders  receiving dividends  at  addresses outside  the  United
States  are not currently required to file tax forms to obtain the benefit of an
applicable treaty rate. Under U.S. Treasury regulations that are proposed to  be
effective  for distributions after  1997 (the "Proposed  Regulations"), to claim
the benefits of a tax treaty a non-U.S. holder of Common Stock would be required
to  satisfy  applicable  certification  requirements.  In  addition,  under  the
Proposed Regulations, in the case of Common Stock held by a foreign partnership,
(x)  the certification requirement would generally be applied to the partners of
the partnership and  (y) the partnership  would be required  to provide  certain
information. The Proposed Regulations also provide look-through rules for tiered
partnerships.  It  is  not  certain  whether,  or  in  what  form,  the Proposed
Regulations will be adopted as final regulations.
 
    If there is excess  withholding on a person  eligible for a treaty  benefit,
the  person  can file  for  a refund  with  the United  States  Internal Revenue
Service.
 
GAIN ON DISPOSITION OF COMMON STOCK
 
    A non-U.S. holder  generally will not  be subject to  United States  federal
income tax in respect of gain recognized on a disposition of Common Stock unless
(i)  the gain is effectively connected with  a trade or business of the non-U.S.
holder in the United  States, (ii) in the  case of a non-U.S.  holder who is  an
individual
 
                                       35
<PAGE>
and  holds the Common  Stock as a capital  asset, such holder  is present in the
United States for 183 or  more days in the taxable  year of the disposition  and
certain  other conditions are met,  (iii) the non-U.S. holder  is subject to tax
pursuant to the provisions of United States tax law applicable to certain United
States expatriates, or (iv)  the Company is  or has been  a "U.S. real  property
holding corporation" for federal income tax purposes and, if the Common Stock is
regularly  traded on an established securities market, the non-U.S. holder held,
directly or indirectly, at any time during the 5-year period ending on the  date
of  disposition (or such shorter period that such shares were held) more than 5%
of the Common Stock. The Company has not been and does not anticipate becoming a
"U.S. real property holding  corporation" for United  States federal income  tax
purposes.
 
INFORMATION REPORTING AND BACKUP WITHHOLDING TAX
 
    Generally,  the Company must report to the U.S. Internal Revenue Service the
amount of dividends paid, the name and address of the recipient and the  amount,
if any, of tax withheld. A similar report is sent to the holder. Pursuant to tax
treaties  or other  agreements, the U.S.  Internal Revenue Service  may make its
reports available to tax  authorities in the  recipient's country of  residence.
Dividends not subject to withholding tax may be subject to backup withholding if
the  non-U.S. holder  is not an  "exempt recipient"  and fails to  provide a tax
identification number and other information  to the Company. Under the  Proposed
Regulations,   dividend  payments  generally  will  be  subject  to  information
reporting and backup  withholding unless  applicable certification  requirements
are satisfied.
 
    If the proceeds of a disposition of Common Stock are paid over by or through
a  United  States office  of a  broker,  the payment  is subject  to information
reporting and possible  backup withholding at  a 31% rate  unless the  disposing
holder  certifies  under  penalties of  perjury  as  to his  name,  address, and
non-U.S. holder status or otherwise establishes an exemption. Generally,  United
States  information reporting and backup withholding requirements will not apply
to a payment of disposition proceeds if  the payment is made outside the  United
States  through a non-United  States office of a  broker. However, United States
information reporting requirements (but not backup withholding) will apply to  a
payment  of disposition proceeds outside the United States if (A) the payment is
made through an office outside the United States of a broker that either (i)  is
a  U.S. person, (ii) derives 50% or more of its gross income for certain periods
from the conduct  of a  trade or business  in the  United States or  (iii) is  a
"controlled  foreign corporation" for United  States federal income tax purposes
and (B) the broker fails to maintain  documentary evidence that the holder is  a
non-U.S. holder or that the holder otherwise is entitled to an exemption.
 
    Backup  withholding is not  an additional tax. Rather,  the tax liability of
persons subject  to backup  withholding will  be reduced  by the  amount of  tax
withheld.  If withholding results  in an overpayment  of taxes, a  refund may be
obtained.
 
FEDERAL ESTATE TAXES
 
    Common Stock held by a non-U.S. holder at the time of death will be included
in such holder's  gross estate  for United  States federal  estate tax  purposes
unless an applicable estate tax treaty provides otherwise.
 
                                       36
<PAGE>
                                  UNDERWRITERS
 
    Under  the  terms and  subject to  conditions  contained in  an Underwriting
Agreement dated the  date hereof, the  U.S. Underwriters named  below, for  whom
Morgan Stanley & Co. Incorporated, Deutsche Morgan Grenfell Inc., Goldman, Sachs
&  Co.  and Hambrecht  & Quist  LLC  are serving  as U.S.  Representatives, have
severally agreed to purchase, and the Company and the Selling Stockholders  have
severally agreed to sell 4,250,000 shares of the Company's Common Stock, and the
International   Underwriters  named  below,  for   whom  Morgan  Stanley  &  Co.
International  Limited,   Deutsche   Morgan   Grenfell   Inc.,   Goldman   Sachs
International   and  Hambrecht  &   Quist  LLC  are   serving  as  International
Representatives   (collectively    with    the   U.S.    Representatives,    the
"Representatives"),  have severally agreed to purchase,  and the Company and the
Selling Stockholders have agreed to sell 750,000 shares of the Company's  Common
Stock  which in the aggregate equals the number of shares set forth opposite the
name of such Underwriters below.
 
<TABLE>
<CAPTION>
                                                                                               NUMBER
NAME                                                                                         OF SHARES
- -------------------------------------------------------------------------------------------  ----------
<S>                                                                                          <C>
U.S. Underwriters:
  Morgan Stanley & Co. Incorporated........................................................
  Deutsche Morgan Grenfell Inc.............................................................
  Goldman, Sachs & Co......................................................................
  Hambrecht & Quist LLC....................................................................
 
                                                                                             ----------
        Subtotal...........................................................................   4,250,000
                                                                                             ----------
 
International Underwriters:
  Morgan Stanley & Co. International Limited...............................................
  Deutsche Morgan Grenfell Inc.............................................................
  Goldman Sachs International..............................................................
  Hambrecht & Quist LLC....................................................................
 
                                                                                             ----------
        Subtotal...........................................................................     750,000
                                                                                             ----------
        Total..............................................................................   5,000,000
                                                                                             ----------
                                                                                             ----------
</TABLE>
 
    The U.S. Underwriters  and the International  Underwriters are  collectively
referred  to as the "Underwriters." The Underwriting Agreement provides that the
obligations of the several  Underwriters to pay for  and accept delivery of  the
shares  of Common Stock  offered hereby are  subject to the  approval of certain
legal matters by counsel and to  certain other conditions. The Underwriters  are
obligated  to take and pay for all of  the shares of Common Stock offered hereby
(other than those covered by the  over-allotment option described below) if  any
are taken.
 
    Pursuant  to the Agreement Between U.S. and International Underwriters, each
U.S. Underwriter has represented  and agreed that,  with certain exceptions  set
forth below, (a) it is not purchasing any U.S. Shares (as defined below) for the
account  of anyone  other than  a United States  or Canadian  Person (as defined
below) and (b) it has not offered or sold, and will not offer or sell,  directly
or indirectly, any U.S. Shares or
 
                                       37
<PAGE>
distribute  this Prospectus  outside the  United States  or Canada  or to anyone
other than a United States or Canadian Person. Pursuant to the Agreement Between
U.S.  and  International  Underwriters,   each  International  Underwriter   has
represented  and agreed that, with certain exceptions set forth below, (a) it is
not purchasing any International  Shares (as defined below)  for the account  of
any  United States or  Canadian Person and (b)  it has not  offered or sold, and
will not offer  or sell,  directly or  indirectly, any  International Shares  or
distribute  this Prospectus within the United States  or Canada or to any United
States  or  Canadian  Person.  The   foregoing  limitations  do  not  apply   to
stabilization  transactions or  to certain  other transactions  specified in the
Agreement Between U.S. and International Underwriters. With respect to Hambrecht
& Quist LLC, the foregoing representations or  agreements (i) made by it in  its
capacity  as  a U.S.  Underwriter shall  apply  only to  shares of  Common Stock
purchased by it in its  capacity as a U.S. Underwriter,  (ii) made by it in  its
capacity  as an International  Underwriter shall apply only  to shares of Common
Stock purchased by it in its capacity as an International Underwriter and  (iii)
shall  not restrict its ability to distribute  this Prospectus to any person. As
used herein, "United States or Canadian  Person" means any national or  resident
of  the United States  or Canada or any  corporation, pension, profit-sharing or
other trust or other  entity organized under  the laws of  the United States  or
Canada  or of  any political  subdivision thereof  (other than  a branch located
outside of the United States and Canada of any United States or Canadian Person)
and includes  any United  States  or Canadian  branch of  a  person who  is  not
otherwise  a United  States or  Canadian Person,  and "United  States" means the
United States of America, its territories, its possessions and all areas subject
to its  jurisdiction. All  shares of  Common Stock  to be  offered by  the  U.S.
Underwriters and International Underwriters under the Underwriting Agreement are
referred  to  herein  as  the  "U.S.  Shares"  and  the  "International Shares,"
respectively.
 
    Pursuant to the Agreement Between U.S. and International Underwriters, sales
may be made between the U.S. Underwriters and the International Underwriters  of
any  number  of  shares  of  Common  Stock  to  be  purchased  pursuant  to  the
Underwriting Agreement  as may  be  mutually agreed.  The  per share  price  and
currency  settlement of any shares  of Common Stock so  sold shall be the public
offering price set  forth on the  cover page hereof,  in United States  dollars,
less  an  amount not  greater than  the per  share amount  of the  concession to
dealers set forth below.
 
    Pursuant to the Agreement Between U.S. and International Underwriters,  each
U.S. Underwriter has represented that it has not offered or sold, and has agreed
not  to offer or  sell, any shares  of Common Stock,  directly or indirectly, in
Canada in contravention  of the  securities laws of  Canada or  any province  or
territory  thereof and has represented  that any offer of  such shares in Canada
will be  made only  pursuant to  an exemption  from the  requirement to  file  a
prospectus  in the province or territory of  Canada in which such offer is made.
Each U.S. Underwriter  has further agreed  to send to  any dealer who  purchases
from  it  any shares  of Common  Stock a  notice stating  in substance  that, by
purchasing such  shares, such  dealer  represents and  agrees  that it  has  not
offered or sold, and will not offer or sell, directly or indirectly, any of such
shares  in  Canada in  contravention of  the  securities laws  of Canada  or any
province or territory thereof and  that any offer of  shares of Common Stock  in
Canada will be made only pursuant to an exemption from the requirement to file a
prospectus  in the province or territory of  Canada in which such offer is made,
and that such dealer will  deliver to any other dealer  to whom it sells any  of
such shares a notice to the foregoing effect.
 
    Pursuant  to the Agreement Between U.S. and International Underwriters, each
International Underwriter has represented  that (i) it has  not offered or  sold
and  will not offer or sell any shares  of Common Stock to persons in the United
Kingdom except to persons whose  ordinary activities involve them in  acquiring,
holding,  managing or disposing  of investments (as principal  or agent) for the
purposes of  their  businesses or  otherwise  in circumstances  which  have  not
resulted  and will not  result in an offer  to the public  in the United Kingdom
within the meaning  of the  Public Offers  of Securities  Regulations 1995  (the
"Regulations");  (ii)  it  has  complied and  will  comply  with  all applicable
provisions of  the Financial  Services  Act of  1986  and the  Regulations  with
respect  to anything done by it in relation to such shares in, from or otherwise
involving the United Kingdom: and (iii) it has only issued or passed on and will
only issue or pass on to any person in the
 
                                       38
<PAGE>
United Kingdom any document received by it in connection with the issue of  such
shares,  if that person is of a kind described in Article 11(3) of the Financial
Services Act 1986 (Investment Advertisements)  (Exemptions) Order 1995, or is  a
person to whom such document may otherwise lawfully be issued or passed on.
 
    Pursuant  to the Agreement Between U.S. and International Underwriters, each
International Underwriter has represented and agreed that it has not offered  or
sold,  and will not offer or sell, directly or indirectly, in Japan or to or for
the account of  any resident  thereof, any shares  of Common  Stock acquired  in
connection   with  this  offering,  except  for  offers  or  sales  to  Japanese
International Underwriters or dealers and except pursuant to any exemption  from
the  registration requirements of the Securities and Exchange Law of Japan. Each
International Underwriter has further agreed to send to any dealer who purchases
from it any of such  shares of Common Stock a  notice stating in substance  that
such dealer may not offer or sell any of such shares, directly or indirectly, in
Japan  or to or for the account of  any resident thereof, except pursuant to any
exemption from the registration requirements of the Securities and Exchange  Law
of  Japan, and that such dealer  will send to any other  dealer to whom it sells
any of such shares a notice to the foregoing effect.
 
    The Underwriters propose to offer part of the shares of Common Stock offered
hereby directly to  the public at  the public  offering price set  forth on  the
cover  page hereof  and part to  certain dealers  at a price  which represents a
concession not in excess of $        per share under the public offering  price.
The  Underwriters may allow, and such dealers  may re-allow, a concession not in
excess of $        per share to other Underwriters or to certain other dealers.
 
    Pursuant to the Underwriting Agreement, the Company has granted to the  U.S.
Underwriters  an  option,  exercisable  for  30  days  from  the  date  of  this
Prospectus, to purchase up  to an additional 750,000  shares of Common Stock  at
the  public offering price set forth on the cover page hereof, less underwriting
discounts and commissions.  The U.S.  Underwriters may exercise  such option  to
purchase solely for the purpose of covering over-allotments, if any, incurred in
the sale of the shares of Common Stock offered hereby. To the extent such option
is  exercised, each U.S.  Underwriter will become  obligated, subject to certain
conditions, to purchase  approximately the  same percentage  of such  additional
shares  as the  number set  forth next  to such  U.S. Underwriters'  name in the
preceding table bears  to the  total number of  shares of  Common Stock  offered
hereby to the U.S. Underwriters.
 
    The  Representatives have informed the Company  that the Underwriters do not
intend to  confirm sales  to  accounts over  which they  exercise  discretionary
authority.
 
    The  Company, the Selling  Stockholders and the  Underwriters have agreed to
indemnify each other  against certain liabilities,  including liabilities  under
the Securities Act of 1933, as amended (the "Securities Act").
 
    Each  of the executive  officers and directors of  the Company, and entities
affiliated with one  of the Company's  non-employee directors, who  collectively
held as of September 30, 1996 an aggregate of 35,694,037 shares, have agreed not
to sell or otherwise dispose of Common Stock of the Company through February 15,
1997  without the prior consent of Morgan Stanley & Co. Incorporated, except for
an aggregate  of  200,000 shares  held  by  certain executive  officers  of  the
Company,  which  shall  not  be  subject  to  such  restriction.  Certain  other
stockholders of the  Company, including  an entity  affiliated with  one of  the
Company's  non-employee  directors, who  are selling  an aggregate  of 3,000,000
shares in this offering and will hold an aggregate of 2,352,727 shares after the
offering, have agreed not to  sell or otherwise dispose  of Common Stock of  the
Company  for up to 120 days after the  date of this Prospectus without the prior
consent of Morgan  Stanley &  Co. Incorporated. The  Company has  agreed in  the
Underwriting  Agreement that  it will not,  directly or  indirectly, without the
prior written consent of Morgan Stanley & Co. Incorporated, offer, pledge, sell,
contract to sell, sell any option  or contract to purchase, purchase any  option
or  contract  to  sell, grant  any  option,  right or  warrant  to  purchase, or
otherwise transfer or dispose  of any shares of  Common Stock or any  securities
convertible  into or  exchangeable for  Common Stock, for  a period  of 120 days
after the date of this Prospectus, subject to certain limited exceptions. Except
for shares subject to the restrictions set
 
                                       39
<PAGE>
forth above  and (i)  14,219,720 shares  subject to  a repurchase  right of  the
Company  which generally lapses at a rate of  20% after 10 months of service and
two percent per  month thereafter, and  (ii) 2,755,544 shares  held by  existing
stockholders  which are "restricted securities" as  that term is defined in Rule
144 under the Securities Act and are not eligible for sale until the  expiration
of  their respective two-year holding periods,  all other shares of Common Stock
are freely tradeable without restriction.
 
    In connection with  this offering,  certain Underwriters  and selling  group
members  (if any)  or their respective  affiliates who  are qualified registered
market makers on the Nasdaq National Market, may engage in passive market making
transactions in the  Common Stock on  the Nasdaq National  Market in  accordance
with  Rule  10b-6A under  the Exchange  Act  during the  two-business-day period
before commencement of offers or sales  of the Common Stock. The passive  market
making  transactions must comply with applicable  volume and price limits and be
identified as such. In general, a passive market maker may display its bid at  a
price  not in  excess of the  highest independent  bid for the  security; if all
independent bids are lowered below the passive market maker's bid, however, such
bid must then  be lowered  when certain  purchase limits  are exceeded.  Passive
market  making may  stabilize the market  price of  the Common Stock  at a level
above that which might otherwise prevail and, if commenced, may be  discontinued
at any time.
 
                                 LEGAL MATTERS
 
    The  validity of the issuance  of the shares of  Common Stock offered hereby
will be  passed  upon for  the  Company by  Wilson  Sonsini Goodrich  &  Rosati,
Professional  Corporation,  Palo  Alto,  California.  Certain  legal  matters in
connection with the offering  will be passed upon  for the Underwriters by  Gray
Cary Ware & Freidenrich, A Professional Corporation, Palo Alto, California.
 
                                    EXPERTS
 
    The  consolidated financial  statements and the  related financial statement
schedule of Netscape Communications Corporation  at December 31, 1995 and  1994,
and  for each of the three years in the period ended December 31, 1995, included
and/or incorporated by reference in the Company's Annual Report on Form 10-K for
the year  ended December  31, 1995,  have been  audited by  Ernst &  Young  LLP,
independent  auditors, as  set forth in  their report  incorporated by reference
therein, and are incorporated by reference  herein in reliance upon such  report
given upon the authority of such firm as experts in accounting and auditing.
 
    The  supplemental consolidated financial statements and related supplemental
financial statement schedule of Netscape Communications Corporation at  December
31,  1995 and 1994 and for each of  the three years in the period ended December
31, 1995, included in the Company's Annual Report on Form 10-K/A Amendment No. 2
for the year ended December  31, 1995, have been audited  by Ernst & Young  LLP,
independent  auditors, as  set forth in  their report  incorporated by reference
herein in reliance upon  such report given  upon the authority  of such firm  as
experts in accounting and auditing.
 
    The  financial statements of InSoft, Inc. at  December 31, 1995 and 1994 and
for each of the three years in  the period ended December 31, 1995  incorporated
by  reference in Netscape Communications Corporation  Form 8-K/A dated April 25,
1996 have been audited by Ernst & Young LLP, independent auditors, as set  forth
in  their report incorporated  by reference herein in  reliance upon such report
given upon the authority of such firm as experts in accounting and auditing.
 
                             AVAILABLE INFORMATION
 
    The Company has filed with the  Commission a Registration Statement on  Form
S-3  (referred  to herein,  together with  all amendments  and exhibits,  as the
"Registration  Statement")  under  the  Securities  Act,  with  respect  to  the
securities  offered by this Prospectus. This  Prospectus does not contain all of
the information set forth in the Registration Statement, certain parts of  which
have  been  omitted  in  accordance  with  the  rules  and  regulations  of  the
Commission. For  further  information  with  respect  to  the  Company  and  the
securities
 
                                       40
<PAGE>
offered hereby, reference is made to the Registration Statement. Statements made
in this Prospectus as to the contents of any contract or other document referred
to or incorporated by reference herein are not necessarily complete and, in each
instance  in which a copy of such contract or document is filed as an exhibit to
the Registration Statement  or another document  filed by the  Company with  the
Commission,  reference is  made to  such copy and  each such  statement shall be
deemed qualified in all respects by  such reference. Copies of the  Registration
Statement may be inspected, without charge, at the offices of the Commission, or
obtained at prescribed rates from the Public Reference Section of the Commission
at the address set forth below.
 
    The  Company is  subject to the  informational requirements  of the Exchange
Act, and  in accordance  therewith  files reports,  proxy statements  and  other
information  with  the  Commission.  Such reports,  proxy  statements  and other
information filed  by the  Company can  be inspected  and copied  at the  public
reference
facilities  of  the Commission  located at  Room 1024,  450 Fifth  Street, N.W.,
Judiciary Plaza, Washington, D.C. 20549 and at the Commission's regional offices
at Seven  World Trade  Center,  13th Floor,  New York,  New  York 10048  and  at
Northwestern  Atrium  Center,  500  West Madison  Street,  Suite  1400, Chicago,
Illinois 60661. Copies  of such material  also can be  obtained from the  Public
Reference  Section  of the  Commission  at Room  1024,  450 Fifth  Street, N.W.,
Washington, D.C. 20549, at  prescribed rates. The  Commission maintains a  World
Wide  Web site that contains reports, proxy and information statements and other
information regarding registrants that file electronically with the  Commission.
The  address of  the site is  http://www.sec.gov. The Company's  Common Stock is
quoted for trading on the Nasdaq  National Market and reports, proxy  statements
and  other information concerning the Company may be inspected at the offices of
the National  Association of  Securities Dealers,  Inc., 9513  Key West  Avenue,
Rockville, Maryland 20850.
 
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<PAGE>
                               GLOSSARY OF TERMS
 
<TABLE>
<CAPTION>
STANDARD                                              DESCRIPTION
- ----------------------------------------------------  ------------------------------------------------------------
 
<S>                                                   <C>
CGI.................................................  Common Gateway Interface
CORBA...............................................  Common Object Request Broker Architecture
FTP.................................................  File Transfer Protocol
HTML................................................  HyperText Markup Language
HTTP................................................  HyperText Transfer Protocol
IIOP................................................  Internet Inter-ORB Protocol
IMAP................................................  Internet Message Access Protocol
IRC.................................................  Internet Relay Chat
Java................................................  Object-oriented, cross-platform programming language
Java Script.........................................  Open, cross-platform object scripting language
LDAP................................................  Lightweight Directory Access Protocol
MIME................................................  Multipurpose Internet Mail Extensions
NNTP................................................  Network News Transfer Protocol
ORB.................................................  Object Request Broker
POP.................................................  Post Office Protocol
RDM.................................................  Resource Description Messages
RTSP................................................  Real Time Streaming Protocol
SDK.................................................  Software Development Kit
SET.................................................  Secure Electronic Transaction
S/MIME..............................................  Secure Multipurpose Internet Mail Extensions
SMTP................................................  Simple Mail Transfer Protocol
SNMP................................................  Simple Network Management Protocol
SOIF................................................  Summary Object Interchange Format
SQL.................................................  Structured Query Language
SSL.................................................  Secure Sockets Layer
TCP/IP..............................................  Transmission Control Protocol/Internet Protocol
vCalendar...........................................  Versit Calendar Standard
VRML................................................  Virtual Reality Markup Language
</TABLE>
 
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