WONDERWARE CORP
S-3/A, 1996-12-27
PREPACKAGED SOFTWARE
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       As filed with the Securities and Exchange Commission on December 26, 1996
                                                      Registration No. 333-16973
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                              --------------------

                          PRE-EFFECTIVE AMENDMENT NO. 1

                                       TO

                                    FORM S-3

                             REGISTRATION STATEMENT

                                      Under

                           THE SECURITIES ACT OF 1933
                              -------------------
                             
                             WONDERWARE CORPORATION

             (Exact name of Registrant as specified in its charter
                              --------------------

             Delaware                                          33-0304677
   (State or other jurisdiction                             (I.R.S. Employer
of incorporation or organization)                        Identification Number)

                              100 Technology Drive
                            Irvine, California 92618
                                 (714) 727-3200

            (Address,  including zip code, and telephone number,  including area
code, of Registrant's principal executive offices)
                              --------------------

                                 Sam M. Auriemma
               Vice President, Finance and Chief Financial Officer
                             WONDERWARE CORPORATION
                              100 Technology Drive
                            Irvine, California 92618
                                 (714) 727-3200

 (Name, address, including zip code, and telephone number, including area code,
                              of agent for service)
                              ---------------------

                                   Copies to:
                              D. Bradley Peck, Esq.
                               COOLEY GODWARD LLP
                        4365 Executive Drive, Suite 1100
                               San Diego, CA 92121
                                 (619) 550-6000
                              --------------------


<PAGE>

================================================================================
INFORMATION  CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMMENDMENT.   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.
================================================================================
                 SUBJECT TO COMPLETION, DATED DECEMBER 26, 1996

                                   PROSPECTUS

                                  82,777 Shares

                             Wonderware Corporation

                                  Common Stock

                              --------------------

         This  Prospectus  relates to 82,777  shares  (the  "Shares")  of Common
Stock, par value $.001 per share (the "Common Stock"), of Wonderware Corporation
("Wonderware"  or  the  "Company").   The  Shares  may  be  offered  by  certain
stockholders  of the Company (the "Selling  Stockholders")  from time to time in
transactions on the Nasdaq National Market, in privately negotiated transactions
or a  combination  of such methods of sale, at fixed prices that may be changed,
at market  prices  prevailing  at the time of sale,  at prices  related  to such
prevailing market prices or at negotiated prices.  The Selling  Stockholders may
effect such transactions by selling the Shares to or through broker-dealers, and
such  broker-dealers  may  receive   compensation  in  the  form  of  discounts,
concessions or commissions  from the Selling  Stockholders  or the purchasers of
the Shares for whom such broker-dealers may act as agent or to whom they sell as
principal or both (which compensation to a particular  broker-dealer might be in
excess  of  customary  commissions).  See  "Selling  Stockholders"  and "Plan of
Distribution."

         None of the proceeds from the sale of the Shares by the Selling
Stockholders  will be  received by the  Company.  The Company has agreed to bear
certain  expenses in  connection  with the  registration  and sale of the Shares
being offered by the Selling  Stockholders.  The Company has agreed to indemnify
the  Selling  Stockholders   against  certain  liabilities,   including  certain
liabilities  under  the  Securities  Act of  1933,  as  amended.  See  "Plan  of
Distribution."

         The Common Stock of the Company is traded on the Nasdaq National Market
under the  Symbol  "WNDR." On  December  17,  1996,  the last sale price for the
Common Stock as reported by the Nasdaq National Market was $9.0625 per share.

                              --------------------
         The Common Stock offered hereby involves a high degree of risk.
                    See "Risk Factors" beginning on page 2.
                              --------------------

    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.

                 The date of this Prospectus is December , 1996




<PAGE>


THE COMPANY
         This Prospectus (and the information  incorporated herein by reference)
contains  forward-looking  statements that involve risks and uncertainties.  The
Company's actual results could differ  materially from those discussed herein or
incorporated herein by reference. Factors that could cause or contribute to such
differences  include,  but are not limited to,  those  discussed  in the section
entitled "Risk Factors," in the Company's most recent  quarterly  report on Form
10-Q and in the section  entitled  "Risk Factors" and elsewhere in the Company's
Annual  Report on Form 10-K for the year ended  December  31,  1995,  as well as
those   discussed   elsewhere  in  this   Prospectus  and  any  other  documents
incorporated herein by reference.

         Wonderware supplies Microsoft  Windows-based  software products for the
industrial  automation  market. The Company was formed as a partnership in April
1987 and was  incorporated  in California  in June 1988 as  Wonderware  Software
Development  Corporation.  The Company  reincorporated in Delaware in July 1993.
Unless the context otherwise  requires,  "Wonderware" and the "Company" refer to
Wonderware Corporation,  a Delaware corporation,  and the Delaware corporation's
predecessor.  The  Company's  executive  offices are  located at 100  Technology
Drive, Irvine, California 92618, and its telephone number is (714) 727-3200.

         This Prospectus  includes  tradenames and trademarks of companies other
than Wonderware.

                                  RISK FACTORS

         In addition to the other information set forth in this Prospectus,  the
following risk factors should be considered  carefully in evaluating the Company
and its business before purchasing any shares of Common Stock offered hereby.

Fluctuations in Quarterly Operating Results

         The  Company  has  recently  experienced  significant  fluctuations  in
quarterly  operating  results and expects to continue to experience  significant
fluctuations in future quarterly operating results.  Such fluctuations have been
caused,  and in the  future may be caused,  by a number of  factors,  including,
among  others:  competition  and  pricing in the  software  industry;  delays in
introduction of products or product enhancements by the Company, its competitors
or other  providers of  hardware,  software and  components  for the  industrial
automation  market;  customer order  deferrals in  anticipation of new products;
market acceptance of new products; reduction in demand for existing products and
shortening  of product  life  cycles as a result of new  product  introductions;
changes  in  operating  expenses;  the size and  timing  of  individual  orders;
software  "bugs" or other product  quality  problems;  seasonality  of revenues;
changes in Company strategy;

<PAGE>


personnel  changes;  foreign currency  exchange rates; mix of products sold; and
general   economic   conditions.   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 indications of future performance.

         Because the Company ships software products within a short period after
receipt of an order,  the Company  typically does not have a material backlog of
unfilled  orders,  and  revenues in any quarter are  substantially  dependent on
orders booked in that quarter. The Company's expense levels are based in part on
its  expectations  as to future revenues and the Company may be unable to adjust
spending  in  a  timely  manner  to  compensate   for  any  revenue   shortfall.
Accordingly,  operating  results  would be adversely  affected by a reduction in
revenues in that quarter since the majority of the Company's expenses are fixed.
Any  significant  weakening  in demand  would have an almost  immediate  adverse
impact on the  Company's  operating  results  and on the  Company's  ability  to
maintain  profitability.  In addition,  fluctuations  in operating  results have
resulted  in, and may in the future  result in,  volatility  in the price of the
Company's Common Stock.

Product Concentration

         The Company's current products are limited in number, and the Company's
product  revenues are derived  primarily  from the family of Wonderware  InTouch
products for industrial  automation  applications.  Revenues from the Wonderware
InTouch family of products  represent over 80% of the Company's  total revenues.
The Company  expects that revenues from these  products will continue to account
for a substantial portion of the Company's revenues in future periods,  but that
the share of revenues  derived from other products will increase as new products
are  introduced.  The life cycles of the  Company's  products  are  difficult to
estimate due in large measure to the recent  emergence of the Company's  market,
the future effect of product  enhancements and future  competition.  Declines in
demand for these  products,  whether as a result of  competition,  technological
change or otherwise, or price reductions would have a material adverse effect on
the Company's operating results.

Competition

         The market for the Company's products is increasingly competitive.  The
Company  expects  competition  to continue to increase,  which could result in a
decline in the Company's  market share as other companies  introduce  additional
and more competitive  Microsoft  Windows-based  products in this emerging market
segment.  Many  of  the  Company's  present  or  anticipated   competitors  have
substantially greater financial,  technical,  marketing and sales resources than
the Company.  There can be no assurance that the Company will be able to compete
successfully in the future.

<PAGE>




Dependence on Microsoft Windows

         The  Company's  software  development  tools are  designed for use with
personal computers running in the Microsoft Windows operating  environment,  and
future sales of the  Company's  products are  dependent  upon  continued  use of
Windows and Windows NT. In addition,  changes to Windows (such as the release of
Windows  95) or Windows NT  require  the  Company  to  continually  upgrade  its
products.  Any inability to produce  upgrades or any material  delay in doing so
would  adversely  affect  the  Company's   operating  results.   The  successful
introduction  of new operating  systems or  improvements  of existing  operating
systems  that compete  with  Windows or Windows NT also could  adversely  affect
sales of the  Company's  products  and have a  material  adverse  effect  on the
Company's operating results.

Rapid Technological Change

         The  market  for the  Company's  products  is  characterized  by  rapid
technological  advances,  evolving  industry  standards,   changes  in  end-user
requirements and frequent new product introductions and enhancements.  While the
Company to date has been  committed  to the  Microsoft  Windows  and  Windows NT
platforms,  the  introduction  of products  embodying new  technologies  and the
emergence of new industry standards could render the Company's existing products
and  products  currently  under  development  obsolete  and  unmarketable.   The
Company's  future  success  will  depend upon its ability to enhance its current
products  and to  develop  and  introduce  new  products  that  keep  pace  with
technological  developments,  respond  to  evolving  end-user  requirements  and
achieve market  acceptance.  Any failure by the Company to anticipate or respond
adequately  to  technological  developments  or  end-user  requirements,  or any
significant  delays in product  development or  introduction,  could result in a
loss of  competitiveness  or revenues.  In the past, the Company has experienced
delays in the introduction of new products and product  enhancements.  There can
be no assurance  that the Company will be successful in developing and marketing
new products or product  enhancements on a timely basis or that the Company will
not  experience  significant  delays in the future,  which could have a material
adverse effect on the Company's results of operations. In addition, there can be
no assurance that new products or product enhancements  developed by the Company
will achieve market acceptance.

Integration of Acquisitions

         In July  1995,  the  Company  entered  into an  Agreement  and  Plan of
Reorganization with EnaTec Software Systems,  Inc., a developer of Windows-based
manufacturing  execution systems software ("EnaTec"),  pursuant to which a newly
formed, wholly

<PAGE>


owned subsidiary of the Company was merged with and into EnaTec. In August 1995,
the Company  entered  into an  Agreement  and Plan of  Reorganization  with Soft
Systems Engineering,  Inc., a developer of batch manufacturing  process software
("SSE"),  pursuant to which SSE was merged with  another  newly  formed,  wholly
owned  subsidiary  of the Company.  The  integration  of EnaTec and SSE into the
Company, the completion of the development of their respective product offerings
and the  integration  of such  product  offerings  into  the  Company's  product
offerings has diverted a significant  portion of the  Company's  management  and
financial  resources  and is expected  to  continue  to do so for an  indefinite
period of time. In October 1996, the Company announced the reorganization of its
Manufacturing Systems Group, which is principally comprised of the former EnaTec
and SSE operations.  As part of this reorganization,  the Company will close its
development center in Cupertino,  California and continue development activities
for   Wonderware   InTrack  at  the  Company's   development   center  in  York,
Pennsylvania.  As a result of this reorganization,  the Company anticipates that
it will  incur a  restructuring  charge of $1.0 to $2.0  million  in the  fourth
quarter of 1996. There can be no assurance that additional difficulties will not
arise in  integrating  the  operations  of  EnaTec  and SSE  into  the  Company,
completing the development of their products or integrating  those products with
the Company's  products.  The failure to  accomplish  any of the goals of either
acquisition  or the failure to  successfully  integrate the operations of either
EnaTec or SSE would have a material  adverse  effect on the Company's  operating
results and financial condition. There can be no assurance that the Company will
realize  increased  revenues or profits as a result of the acquisition of EnaTec
and  SSE.  In  particular,   the  new  product  offerings  resulting  from  such
acquisitions address new markets with which the Company's existing  distributors
are relatively unfamiliar,  and there can be no assurance that such distributors
will be able to successfully market and ell these new products.
         In December 1996, the Company acquired all of the outstanding shares of
capital  stock of its  software  distributor  in  Germany,  ICT-Wonderware  GmbH
("Wonderware GmbH"). As a result of the acquisition,  the Company announced that
it would close its European regional sales office in Amsterdam, The Netherlands.
There can be no  assurance  that the  integration  of  Wonderware  GmbH into the
Company will not divert a significant  portion of the Company's  management  and
financial  resources  or that  difficulties  will not arise in  integrating  the
operations  of  Wonderware  GmbH  into the  Company.  Moreover,  there can be no
assurance  that the  acquisition  of  Wonderware  GmbH will result in  increased
revenues or profits.  The failure to accomplish the goals of the  acquisition of
Wonderware GmbH could have a material adverse effect on the Company's  operating
results and financial condition.


<PAGE>


Legal Proceedings

         In December  1996,  the Company was notified  that a complaint had been
filed in the U.S.  District Court for the Eastern  District of  Pennsylvania  by
Otto M. Voit,  III (Civil Action No.  96-CV-7883).  In the  complaint,  Mr. Voit
purports  to be acting  on behalf of all  former  holders  of common  stock,  or
options to acquire common stock,  of SSE, which was acquired by the Company in a
stock-for-stock  merger  exchange  in  August  1995.  Mr.  Voit  alleges  in the
complaint  that the Company and certain of its officers who have also been named
as  defendants  in the  action  made or caused to be made  materially  false and
misleading  statements and concealed material information in connection with the
acquisition  of SSE by the  Company.  In  particular,  Mr.  Voit  alleges in the
complaint  that the  Company  and the other  defendants  knew at the time of the
acquisition and failed to disclose that certain senior  officers,  including its
then Chief Executive Officer,  were planning to leave the Company. Mr. Voit also
alleges  that the  Company  knew at the time of the  acquisition  and  failed to
disclose  that it was planning to implement  certain  changes in its  operations
that would  substantially  increase the  Company's  operating  expenses.  In the
complaint,  Mr. Voit claims that these alleged  misrepresentations and omissions
constitute  violations of the  Securities  Exchange Act of 1934, as amended (the
"Exchange Act"), Rule 10b-5 thereunder and various state securities laws, common
law fraud,  negligent  misrepresentation,  fraudulent inducement to enter into a
contract and  inducement to enter into a contract by material  misrepresentation
and requests relief in the form of compensatory  and punitive damages as well as
the costs incurred in pursuing his claims.  The Company believes the allegations
in the complaint  are without merit and intends to vigorously  defend itself and
the  other  defendants,  each of whom has  been  previously  indemnified  by the
Company in connection with his employment as an officer of the Company,  against
the claims stated in the complaint.  It is too early to determine the impact, if
any, of these proceedings on the Company, its financial condition or its results
of operations, but there can be no assurance that the results of such litigation
will not have a material adverse effect on the Company,  its financial condition
or its results of operations.

         On October 16, 1996,  the Company  filed an action in the United States
District  Court  for the  Central  District  of  California  against  Cyberlogic
Technologies,  Inc. ("Cyberlogic") and Intellution,  Inc.  ("Intellution").  The
complaint  alleges that Cyberlogic and Intellution  have infringed the copyright
in a particular  software  program which Cyberlogic  originally  developed under
contract  for  the  Company.  The  complaint  seeks  preliminary  and  permanent
injunctive  relief as well as actual and punitive  damages and attorneys'  fees.
The  Company   anticipates   that   Cyberlogic  and   Intellution   will  assert
counterclaims.  In addition,  Cyberlogic  has filed a demand for  arbitration of
various issues arising in or related to the pending litigation. Pursuant to such
demand,  Cyberlogic is seeking  declaratory relief and damages of an unspecified
amount.  No  assurance  can be given  concerning  the  ultimate  outcome of this
matter. In any event,
<PAGE>


even if the Company is successful in such proceedings, the legal and other costs
associated with such proceedings could be substantial.

         On July 9, 1996, the Company filed a complaint in the Superior Court of
California for the County of Orange against Constantin S. Delivanis and Vladimir
Preysman,   formerly  the  Vice   President   and  Vice   President-Engineering,
respectively,  of the Company's  Cupertino  Development  Center.  This complaint
alleges fraud, negligent misrepresentation,  duress, securities fraud, breach of
the implied  covenant of good faith and fair  dealing,  and breach of  fiduciary
duty against Messrs.  Delivanis and Preysman.  The Cupertino  Development Center
was  established  upon the  Company's  acquisition  of EnaTec,  in which Messrs.
Delivanis and Preysman  owned a substantial  majority of the stock (see Note 12,
Acquisitions,  of Notes to  Consolidated  Financial  Statements  included in the
Company's  1995  Annual  Report  to  Stockholders   for  a  description  of  the
acquisition of EnaTec). The Company is seeking compensatory and punitive damages
with  respect to its claims,  as well as the costs  incurred  in pursuing  these
claims.  Both Mr. Delivanis and Mr.  Preysman's  employment with the Company was
terminated.  Both Mr.  Delivanis  and Mr.  Preysman  answered the  complaint and
asserted  cross-claims  against  the  Company,   alleging  breach  of  contract,
termination  in  violation  of  public  policy,  defamation  (slander  per  se),
intentional infliction of emotional distress,  negligence,  common law fraud and
deceit, and civil conspiracy.  Both requested relief in the form of compensatory
and  punitive   damages  as  well  as  the  costs  incurred  in  pursuing  their
cross-claims.  In addition, on September 27, 1996, Mr. Delivanis,  Mr. Preysman,
and the Delivanis  Family Trust filed a complaint for  declaratory  judgment and
specific  performance,  seeking  registration of certain  Wonderware  stock. The
Company has demurred to that complaint. It is too early to determine the impact,
if any, of these  proceedings  on the  Company or the  results of the  Company's
operations.

         In 1995, The Foxboro Company ("Foxboro")  initiated  litigation against
SSE  asserting  claims with respect to Foxboro's  ownership  interest in certain
software  developed by SSE, which  interest is subject to a repurchase  right in
favor of SSE. There can be no assurance that the results of such litigation will
not  have a  material  adverse  effect  on the  Company.  There  also  can be no
assurance that SSE will be able to repurchase  Foxboro's  ownership interest or,
if such repurchase is  accomplished,  that it would be on terms favorable to the
Company.  Although it is too early to determine the ultimate outcome,  there can
be no  assurance  that,  if  such  repurchase  is  not  accomplished,  Foxboro's
ownership  interest or the exercise of Foxboro's  rights under  agreements  with
SSE,  would not have a material  adverse effect on the Company or the results of
the Company's operations.



<PAGE>


Management of Growth

         The  Company has  recently  experienced  rapid  growth in the number of
employees,  the scope of its operating and financial  systems and the geographic
area of its operations.  This growth has resulted in an increase in the level of
responsibility  for both existing and new  management  personnel.  To manage its
growth  effectively,  the Company will be required to continue to implement  and
improve its operating and financial systems and to expand,  train and manage its
employee base. There can be no assurance that the management  skills and systems
currently  in place will be  adequate  if the  Company  continues  to grow.  The
Company may make additional acquisitions in the future. The Company's management
has only limited  experience with  acquisitions,  which involve  numerous risks,
including difficulties in the assimilation of the operations and products of the
acquired companies,  the diversion of management's attention from other business
concerns and the potential loss of key employees of the acquired companies.

Key Employees

         The Company's  continued success will depend upon its ability to retain
a number of key employees,  including Roy H. Slavin,  the Company's  Chairman of
the Board,  President and Chief Executive Officer,  most of whom are not subject
to employment  agreements or agreements  that restrict  their ability to compete
with the Company following the termination of their employment. In addition, the
Company  believes  that its  future  success  will  depend in large  part on its
ability to attract and retain highly skilled technical, managerial and marketing
personnel.  Competition  for such  personnel  is  intense,  and  there can be no
assurance  that the Company will be successful in attracting  and retaining such
personnel.  The loss of certain key  employees  or the  Company's  inability  to
attract  and retain  other  qualified  employees  could have a material  adverse
effect on the Company's business.

Reliance upon Distribution Channel

         The Company has relied and  expects to  continue to rely  primarily  on
independent  distributors  for the marketing and  distribution  of its products.
These distributors may also represent other lines of products, some of which may
be complementary to or competitive  with the Company's  products.  The Company's
distributors  are not within the control of the Company and are not obligated to
purchase   products  from  the  Company.   While  the  Company   encourages  its
distributors  to focus  primarily  on the  promotion  and sale of the  Company's
products, there can be no assurance that these distributors will not give higher
priority to the sale of other products, including products developed by existing
or potential  competitors.  A reduction in sales  efforts or  discontinuance  of
sales of the Company's  products by its distributors could lead to reduced sales
and could adversely affect the Company's  operating  results.  In addition,  the
Company has recently expanded

<PAGE>


its  product  offering  to include  software  products,  such as its  Wonderware
InTrack  product,  that  address new markets with which the  Company's  existing
distributors  are  relatively  unfamiliar.  There can be no  assurance as to the
continued  viability or financial stability of the Company's  distributors,  the
ability of the Company's existing  distributors to successfully  market and sell
the  Company's  new  product  offerings,  the  Company's  ability  to retain its
existing  distributors or the Company's  ability to add new  distributors in the
future. In addition, as a result of new product introductions or pricing actions
by the Company or others, the Company's  distributors or end-users may alter the
expected timing of their product  purchases,  thereby  exacerbating the possible
variability of the Company's quarterly operating results.

Dependence on General Economic Conditions

         Based in part on the growth in the overall market for and the Company's
penetration  of the  industrial  automation  software  market,  as  well  as the
geographic  and  industry  diversity  of the  Company's  customers,  the Company
believes that general economic conditions have not had a material adverse effect
on the  Company's  results  of  operation  to date.  There can be no  assurance,
however, that economic conditions will not have a material adverse effect on the
Company in the future.

International Sales

         Historically,  the Company  derived a significant  portion of its total
revenues from international  sales. The Company expects that international sales
will continue to represent a significant  percentage of its total revenues.  The
Company's  international  operations  are  subject to various  risks,  including
exposure  to  currency  fluctuations,  regulatory  requirements,  political  and
economic  instability and trade  restrictions.  Although the Company's sales are
typically made in U.S. dollars,  a weakening in the value of foreign  currencies
relative to the U.S.  dollar could have an adverse impact on the effective price
of the  Company's  products  in its  international  markets.  Delays in  foreign
language  translations  and other measures to "localize"  the Company's  product
offerings for  international  markets could also adversely impact the timing and
amount of  international  sales.  In  addition,  the  Company's  business may be
adversely affected by lower sales levels in Europe, which typically occur during
the summer months.

Dependence on Proprietary Rights

         The Company regards its software as proprietary and attempts to protect
it  with  copyrights,   trademarks,   trade  secret  laws  and  restrictions  on
disclosure, copying and transferring title. However, the Company has no patents,
and existing  copyright  laws afford only limited  practical  protection for the
Company's  software.  In  addition,  the laws of some  foreign  countries do not
protect the Company's proprietary rights to the same

<PAGE>


extent as do the laws of the United  States.  The Company  licenses its products
primarily  under  "shrink  wrap"  license  agreements  that  are not  signed  by
licensees and therefore may be  unenforceable  under the laws of certain foreign
jurisdictions.  In addition, in some instances the Company licenses its products
under  agreements  that give licensees  limited access to the source code of the
Company's  products.  Accordingly,  despite precautions taken by the Company, it
may be possible for  unauthorized  third parties to copy certain portions of the
Company's  products or to obtain and use information that the Company regards as
proprietary.  As the number of software  products in the industry  increases and
the functionality of these products further overlaps,  the Company believes that
such software will become  increasingly the subject of claims that such software
infringes the rights of others.
         
Although the Company does not believe that its products infringe on the
rights  of  third  parties,  from  time  to time  third  parties  have  asserted
infringement claims against the Company and there can be no assurance that third
parties will not assert  infringement  claims against the Company in the future.
Moreover,  there can be no assurance that any such assertions will not result in
costly  litigation  or require the  Company to obtain a license to  intellectual
property  rights of such parties.  In addition,  there can be no assurance  that
such licenses will be available on reasonable terms, or at all.

Potential Volatility of Stock Price

         The Company believes factors such as quarterly  fluctuations in results
of operations, management changes, delays in the introduction of new products or
product enhancements, and announcements of new products by the Company or by its
competitors  has caused and may continue to cause the market price of the Common
Stock to fluctuate substantially.  In addition, in recent years the stock market
in  general,  and  the  shares  of  technology  companies  in  particular,  have
experienced  extreme  price  fluctuations.   These  broad  market  and  industry
fluctuations  may  adversely  affect the market  price of the  Company's  Common
Stock.

Anti-Takeover  Effects of Certain Charter  Provisions,  Unissued Preferred Stock
and Delaware Law

         The Company's  Board of Directors has the authority,  without action by
the  Stockholders,  to fix the rights and  preferences of and to issue shares of
Preferred  Stock.  In February 1996, the Board of Directors  adopted a Preferred
Share Purchase Rights Plan (commonly  known as a "poison pill"),  which may have
the effect of delaying or  preventing  a change in control of the  Company.  The
Company is also subject to the  anti-takeover  provisions  of Section 203 of the
Delaware  General  Corporation  Law.  Furthermore,  certain  provisions  of  the
Company's  Certificate of Incorporation and Bylaws may discourage  certain types
of transactions involving an actual or potential

<PAGE>


change  in  control  of  the  Company,   including  transactions  in  which  the
stockholders  might  otherwise  receive a premium  for  their  shares  over then
current  prices,  and may limit  the  ability  of the  stockholders  to  approve
transactions that they deem to be in their best interest.

<PAGE>


                              SELLING STOCKHOLDERS

         The  following  table  sets forth  certain  information  regarding  the
beneficial ownership of Common Stock of each Selling Stockholder and as adjusted
to give effect to the sale of the Shares  offered  hereby.  The Shares are being
registered to permit  public  secondary  trading of the Shares,  and the Selling
Stockholders  may offer the Shares for  resale  from time to time.  See "Plan of
Distribution."



<TABLE>
<CAPTION>

                                                                             Beneficial
                                       Number of Shares     Number of         Ownership
                                      Beneficially Owned      Shares            After
Selling Stockholder                   Prior to Offering    Being Offered     Offering(1)
<S>                                          <C>               <C>              <C>

William F. Anderson, Jr.(2)                  50,681            22,300           28,381
William F. Anderson, Jr. and                    226               226              --
Janet L. Anderson (3)
Jeffrey L. Kissling                          50,185            21,804           28,381
Laurence G. LeBlanc                          14,519             6,352            8,167
Otto W. Voit III (4                          14,519             6,352            8,167
Susan V. Maull(5)                             3,675             2,848              827
Susan V. Maull and Raymond F. Chevaux,          453               453              --
Jr.(6)
David A. Westrom                             11,615             5,081            6,534
Paul F. Myers(7)                                588                41              547
Donald R. Tunnell(8)                          1,359                63            1,296
Eric P. Grove(9)                              1,179                13            1,166
Stanley R. Brubaker(10)                       2,720                13            2,707
Otto W. Voit, Jr. and Lynne J. Vanino           907               907              --
Thomas J. Krebs                               1,361             1,361              --
Frederick Jopp and Charlene B. Jopp           3,629             3,629              --
Richard B. Felbeck                              907               907              --
Wesley A. Logan and Patricia K. Logan           453               453              --
Mary S. Skold                                   907               907              --
Duane Ahlbrandt and Judith A. Ahlbrandt         907               907              --
Scott S. Weaver and Julie L. Weaver             907               907              --
Bruce Williams and Sharon L. Williams           453               453              --
Barry M. Barbush and Holly K. Barbush           453               453              --

<PAGE>

Richard H. Mylin III and Cindy R. Mylin         453               453              --
Fred B. Atwood and Helen J. Atwood            1,814             1,814              --
Donald L. Hicks and Delores Hicks               907               907              --
Frank D. Sams(11)                             1,814             1,814              --
Frank D. Sams and Jane E. Sams(12)              453               453              --
Eric A. Felbeck                                 453               453              --
Matthew J. Felbeck                              453               453              --
- --------------------
<FN>

(1)      Based on 13,809,032  shares of Common Stock  outstanding  as of October
         15, 1996, no Selling Stockholder  beneficially owns more than 1% of the
         Company's outstanding Common Stock.
(2)      Includes  226 shares  held in trust in an  individual  retirement  account  for the  benefit of William F.
         Anderson, Jr.  Does not include 226 shares held jointly with Janet L. Anderson.
(3)      Does not include 226 shares held in trust in an individual  retirement  account for the benefit of William
         F. Anderson, Jr. or 45,410 held solely by William F. Anderson, Jr.
(4)      Mr. Voit has filed a lawsuit  against the Company,  purportedly  on behalf of a class of holders of Common
         Stock who were formerly SSE  stockholders  or optionees.  See "Risk  Factors - Legal  Proceedings."  Other
         Selling Stockholders may be members of such class.
(5)      Does not include 453 shares held jointly with Raymond F. Chevaux, Jr.
(6)      Does not include 3,675 shares held solely by Susan V. Maull.
(7)      Includes 534 shares subject to stock options exercisable within 60 days of October 15, 1996.
(8)      Includes 1,296 shares subject to stock options exercisable within 60 days of October 15, 1996.
(9)      Includes 1,161 shares subject to stock options exercisable within 60 days of October 15, 1996.
(10)     Includes 2,702 shares subject to stock options exercisable within 60 days of October 15, 1996.
(11)     Does not include 453 shares held jointly with Jane E. Sams.
(12)     Does not include 1,814 shares held solely by Frank D. Sams.

</FN>
</TABLE>
                                     

<PAGE>


                              PLAN OF DISTRIBUTION

         The Company has been  advised  that the Selling  Stockholders  may sell
Shares  from time to time in  transactions  on the Nasdaq  National  Market,  in
privately-negotiated  transactions  or a combination of such methods of sale, at
fixed prices which may be changed,  at market  prices  prevailing at the time of
sale,  at prices  related  to such  prevailing  market  prices or at  negotiated
prices.  The Selling  Stockholders  may effect such  transactions by selling the
Shares  to or  through  broker-dealers,  and  such  broker-dealers  may  receive
compensation  in the form of  discounts,  concessions  or  commissions  from the
Selling   Stockholders   or  the   purchasers   of  the  Shares  for  whom  such
broker-dealers  may act as  agent or to whom  they  sell as  principal,  or both
(which  compensation  to a  particular  broker-dealer  might  be  in  excess  of
customary commission).

         The Selling  Stockholders and any  broker-dealers who act in connection
with the sale of Shares  hereunder  may be deemed to be  "underwriters"  as that
term is defined in the  Securities  Act of 1933,  as  amended  (the  "Securities
Act"),  and any  commissions  received  by them and  profit on any resale of the
Shares as principal might be deemed to be underwriting discounts and commissions
under the Securities Act.

                                  LEGAL MATTERS

         The validity of the issuance of the Common Stock offered hereby will be
passed upon for the Company by Cooley Godward LLP, San Diego, California.

                                     EXPERTS

         The consolidated  financial statements as of December 31, 1995 and 1994
and  for  each  of the  three  years  in the  period  ended  December  31,  1995
incorporated by reference from the Company's  Annual Report on Form 10-K for the
year ended  December  31,  1995,  have been  audited by  Deloitte & Touche  LLP,
independent  auditors, as stated in their report which is incorporated herein by
reference and have so been incorporated in reliance upon the report of such firm
given upon their authority as experts in accounting and auditing.

                              AVAILABLE INFORMATION

         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   Securities   and  Exchange   Commission   (the
"Commission"). Such reports, proxy statements and other information filed by the
Company  may  be  inspected  and  copied  at  the  public  reference  facilities
maintained by the  Commission at Room 1024,  450 Fifth Street,  N.W.,  Judiciary
Plaza,  Washington,  D.C.  20549,  and at the  Commission's  following  Regional
Offices:  Chicago Regional Office, Suite 1400, 500 West Madison Street, Chicago,
Illinois 60661; and New York Regional Office, Seven World Trade

<PAGE>


Center,  Suite 1300, New York, New York 10048.  Copies of such material can also
be  obtained  at  prescribed  rates  from the  Public  Reference  Section of the
Commission at 450 Fifth Street, N.W., Judiciary Plaza,  Washington,  D.C. 20549.
The  Commission  also  maintains  a site on the  World  Wide Web  that  contains
reports,  proxy and information  statements and other information  regarding the
Company. The address for such site is http://www.sec.gov.

         The Company has filed with the Commission a  Registration  Statement on
Form S-3 under the  Securities  Act with  respect  to the Common  Stock  offered
hereby. This Prospectus does not contain all of the information set forth in the
Registration  Statement,  certain parts of which are omitted in accordance  with
the rules and  regulations  of the  Commission.  For  further  information  with
respect to the Company and the Common Stock offered hereby, reference is made to
the Registration  Statement and the exhibits and schedules thereto, which may be
inspected  without  charge at, and copies  thereof may be obtained at prescribed
rates from, the Public Reference  Section of the Commission at 450 Fifth Street,
N.W., Judiciary Plaza, Washington, D.C. 20549.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The  Company's  Annual  Report on Form 10-K for the  fiscal  year ended
December 31, 1995, the Company's  Current Reports on Form 8-K dated February 15,
1996, and December 2, 1996, the Company's Quarterly Reports on Form 10-Q for the
quarters ended March 31, 1996, June 30, 1996, and September 30, 1996, filed with
the Commission are hereby incorporated by reference in this Prospectus except as
superseded or modified herein. All documents filed with the Commission  pursuant
to Section 13(a),  13(c), 14 or 15(d) of the Exchange Act after the date of this
Prospectus  and prior to the  termination  of the offering shall be deemed to be
incorporated  by reference into this Prospectus and to be a part hereof from the
date of  filing of such  documents.  Any  statement  contained  in any  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 which
also  is or is  deemed  to be  incorporated  by  reference  herein  modifies  or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed,  except as modified or  superseded,  to constitute a part of this
Prospectus.  The Company will provide  without charge to each person,  including
any beneficial owner, to whom this Prospectus is delivered, upon written or oral
request of such person, a copy of any and all of the documents that have been or
may be incorporated  by reference  herein (other than exhibits to such documents
which are not specifically incorporated by reference into such documents).  Such
requests  should be directed  to the Chief  Financial  Officer at the  Company's
principal executive offices at 100 Technology Drive,  Irvine,  California 92618,
telephone number (714) 727-3200.



<PAGE>


                                TABLE OF CONTENTS

                                                                            Page

THE COMPANY..................................................................  2

RISK FACTORS.................................................................  2

SELLING STOCKHOLDERS........................................................  11

PLAN OF DISTRIBUTION......................................................... 13

LEGAL MATTERS................................................................ 13

EXPERTS.......................................................................13

AVAILABLE INFORMATION........................................................ 13

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.............................. 14



                              --------------------

         No person is authorized in connection  with any offering made hereby to
give any information or to make any representation not contained or incorporated
by reference in this  Prospectus,  and any  information  or  representation  not
contained  or  incorporated  herein  must  not be  relied  upon as  having  been
authorized by the Company. 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 offer or  solicitation.  Neither the
delivery of this Prospectus at any time nor any sale made hereunder shall, under
any  circumstances,  imply that the information herein is correct as of any date
subsequent to the date hereof.



<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 15.  Indemnification of Officers and Directors.

         Under  Section  145  of  the  Delaware  General  Corporation  Law,  the
Registrant  has broad powers to indemnify  its  Directors  and officers  against
liabilities they may incur in such capacities,  including  liabilities under the
Securities Act of 1933, as amended (the "Securities Act").

         The  Registrant's  Certificate  of  Incorporation  and By-laws  include
provisions to (i) eliminate the personal liability of its directors for monetary
damages  resulting from breaches of their fiduciary duty to the extent permitted
by Section  102(b)(7) of the General  Corporation Law of Delaware (the "Delaware
Law") and (ii) require the Registrant to indemnify its directors and officers to
the fullest  extent  permitted  by Section 145 of the  Delaware  Law,  including
circumstances in which indemnification is otherwise  discretionary.  Pursuant to
Section  145 of the  Delaware  law,  a  corporation  generally  has the power to
indemnify  its  present and former  directors,  officers,  employees  and agents
against expenses incurred by them in connection with any suit to which they are,
or are  threatened  to be made,  a party by  reason  of  their  serving  in such
positions  so long as they acted in good faith and in a manner  they  reasonably
believed to be in, or not opposed to, the best interests of the corporation, and
with respect to any criminal  action,  they had no  reasonable  cause to believe
their conduct was unlawful.  The Registrant  believes that these  provisions are
necessary to attract and retain  qualified  persons as directors  and  officers.
These  provisions  do not  eliminate  the  directors'  duty  of  care,  and,  in
appropriate circumstances,  equitable remedies such as injunctive or other forms
of  non-monetary  relief will remain  available under Delaware Law. In addition,
each  director  will  continue  to be  subject  to  liability  for breach of the
director's duty of loyalty to the Registrant,  for acts or omissions not in good
faith or involving  intentional  misconduct,  for knowing violations of law, for
acts or  omissions  that  the  director  believes  to be  contrary  to the  best
interests of the Registrant or its stockholders,  for any transaction from which
the  director  derived  an  improper  personal  benefit,  for acts or  omissions
involving a reckless  disregard for the director's duty to the Registrant or its
stockholders  when the director was aware or should have been aware of a risk of
serious injury to the Registrant or its stockholders, for acts or omissions that
constitute an unexcused  pattern of inattention that amounts to an abdication of
the  director's  duty  to the  Registrant  or  its  stockholders,  for  improper
transactions   between  the  director  and  the   Registrant  and  for  improper
distributions to stockholders and loans to directors and officers. The provision
also does not affect a director's  responsibilities under any other law, such as
the federal securities law or state or federal environmental laws. 

                                      II-1


<PAGE>


         The Registrant has entered into indemnity  agreements  with each of its
directors and executive  officers that require the  Registrant to indemnify such
persons  against  expenses,  judgments,  fines,  settlements  and other  amounts
incurred  (including  expenses of a derivative  action) in  connection  with any
proceeding, whether actual or threatened, to which any such person may be made a
party  by  reason  of the fact  that  such  person  is or was a  director  or an
executive  officer  of the  Registrant  or any  of its  affiliated  enterprises,
provided such person acted in good faith and in a manner such person  reasonably
believed to be in or not opposed to the best  interests of the  Registrant  and,
with respect to any criminal proceeding,  had no reasonable cause to believe his
conduct was  unlawful.  The  indemnification  agreements  also set forth certain
procedures  that  will  apply  in  the  event  of a  claim  for  indemnification
thereunder.

         The  Registrant  has an  insurance  policy  covering  the  officers and
directors  of the  Registrant  with  respect to certain  liabilities,  including
liabilities arising under the Securities Act or otherwise.

Item 16.  Exhibits.

           Exhibit Number
                                   Description of Document
           23.1                    Consent of Deloitte & Touche LLP.  Reference 
                                   is made to page II-6.


Item 17.  Undertakings.

         Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to  directors,  officers,  and  controlling  persons of the
Registrant  pursuant to the  provisions  described in Item 15 or otherwise,  the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission,  such  indemnification  is against public policy as expressed in the
Securities Act and is, therefore,  unenforceable.  In the event that a claim for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses incurred or paid by a director,  officer,  or controlling
person of the  Registrant  in the  successful  defense of any action,  suit,  or
proceeding) is asserted by such  director,  officer,  or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act and will be governed by the final adjudication of such issue.

                                      II-2

<PAGE>




         The undersigned  Registrant hereby undertakes:  (1) to file, during any
period in which  offers or sales are being made, a  post-effective  amendment to
this registration statement:

         (i)      to include any prospectus required by section 10(a)(3) of the 
         Securities Act;

         (ii) to reflect in the prospectus any facts or events arising after the
         effective  date  of the  registration  statement  (or the  most  recent
         post-effective  amendment  thereof)  which,   individually  or  in  the
         aggregate,  represent a fundamental change in the information set forth
         in the  registration  statement.  Notwithstanding  the  foregoing,  any
         increase  or  decrease  in volume of  securities  offered (if the total
         dollar  value of  securities  offered  would not exceed  that which was
         registered) and any deviation from the low or high end of the estimated
         maximum offering range may be reflected in the form of prospectus filed
         with the Commission  pursuant to Rule 424(b) if, in the aggregate,  the
         changes in volume and price  represent no more than a 20% change in the
         maximum  aggregate  offering  price  set forth in the  "Calculation  of
         Registration Fee" table in the effective registration statement;

         (iii) to include any material  information  with respect to the plan of
         distribution not previously disclosed in the registration  statement or
         any material change to such information in the registration statement;

provided  however,  that  clauses  (i) and (ii) do not apply if the  information
required  to be  included  in a  post-effective  amendment  by these  clauses is
contained in periodic reports filed by the Registrant  pursuant to section 13 or
section  15(d) of the  Exchange  Act that are  incorporated  by reference in the
registration  statement;  (2) that, for the purpose of determining any liability
under the Securities Act, each post-effective  amendment shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide  offering  thereof;  and (3) to  remove  from  registration  by  means of a
post-effective  amendment any of the securities  being  registered  which remain
unsold at the termination of the offering.

         The  undersigned  Registrant  undertakes  that:  (1)  for  purposes  of
determining any liability under the Securities Act, the information omitted from
the form of prospectus filed as part of the  registration  statement in reliance
upon Rule 430A and contained in the form of prospectus  filed by the  Registrant
pursuant to Rule  424(b)(1) or (4) or 497(h) under the  Securities  Act shall be
deemed to be part of the  registration  statement as of the time it was declared
effective; (2) for the purpose of determining any liability under the Securities
Act, each post-effective amendment that contains a form of prospectus shall be

                                      II-3

<PAGE>


deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof;  and (3) for the purposes of determining
any liability under the Securities Act, each filing of the  Registrant's  annual
report  pursuant to Section  13(a) or Section  15(d) of the  Exchange  Act (and,
where  applicable,  each  filing of an employee  benefit  plan's  annual  report
pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference
in the registration statement shall be deemed to be a new registration statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

                                      II-4



<PAGE>


                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf by the  undersigned,  thereunto duly  authorized,  in the City of Irvine,
State of California, on the 26th day of December, 1996.

                                     WONDERWARE CORPORATION


                                 By:/s/ Sam M. Auriemma 
                                    -----------------------  
                                    Sam M. Auriemma
                                    Vice President, Finance and 
                                    Chief Financial Officer
                                    (Principal financial and accounting officer)

Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the dates indicated.

   Signature                          Title                          Date

/s/ Roy H. Slavin*        Chairman of the Board President and  December 26, 1996
- ------------------------  Chief Executive Officer (Principal
 Roy H. Slavin            executive officer)



/s/ Sam M. Auriemma       Vice President, Finance and Chief    December 26, 1996
- ------------------------  Financial Officer (Principal
 Sam M. Auriemma          financial and accounting officer)


/s/ F. Rigdon Currie*     Director                             December 26, 1996
- ------------------------
 F. Rigdon Currie
                                                               December 26, 1996
/s/ Harvard H. Hill, Jr.* Director
- ------------------------        
 Harvard H. Hill, Jr.           
                                                               December 26, 1996
/s/ Jay L. Kear*          Director
- ------------------------        
 Jay L. Kear                    
                                                               December 26, 1996
/s/ John E. Rehfeld*      Director
- ------------------------
 John E. Rehfeld

          
         
*By:/s/Sam M. Auriemma
    ---------------------
     Sam M. Auriemma
     Attorney-in-Fact  

                                      II-5

<PAGE>



                          INDEPENDENT AUDITORS' CONSENT



We consent to the incorporation by reference in this Pre-Effective Amendment No.
1 to  Registration  Statement  No.  333-16973 of Wonderware  Corporation  of our
report dated  January 17, 1996,  appearing in the Annual  Report on Form 10-K of
Wonderware Corporation for the year ended December 31, 1995 and to the reference
to us under  the  heading  "Experts"  in the  Prospectus,  which is part of this
Registration Statement.

DELOITTE & TOUCHE LLP



Costa Mesa, California
December 24, 1996

                                      II-6

<PAGE>


                                  Exhibit Index

 Exhibit                                                               
 Number        Description of Document                                
                                                 
  23.1        Consent of Deloitte & Touche LLP.  Reference
              is made to page II-6.






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