<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ALLAIRE
CORPORATION FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S.
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<EXCHANGE-RATE> 1
<CASH> 44,583
<SECURITIES> 89,951
<RECEIVABLES> 16,801
<ALLOWANCES> (998)
<INVENTORY> 435
<CURRENT-ASSETS> 151,916
<PP&E> 15,688
<DEPRECIATION> (6,975)
<TOTAL-ASSETS> 167,945
<CURRENT-LIABILITIES> 52,310
<BONDS> 0
0
0
<COMMON> 273
<OTHER-SE> 115,089
<TOTAL-LIABILITY-AND-EQUITY> 167,945
<SALES> 50,806
<TOTAL-REVENUES> 59,925
<CGS> 2,520
<TOTAL-COSTS> 11,877
<OTHER-EXPENSES> 47,678
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 76
<INCOME-PRETAX> 3,701
<INCOME-TAX> 925
<INCOME-CONTINUING> 2,776
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 2,776
<EPS-BASIC> 0.10
<EPS-DILUTED> 0.09
</TABLE>