<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. DOLLARS
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<EXCHANGE-RATE> 1
<CASH> 45,091
<SECURITIES> 80,357
<RECEIVABLES> 17,450
<ALLOWANCES> (1,055)
<INVENTORY> 451
<CURRENT-ASSETS> 144,312
<PP&E> 24,341
<DEPRECIATION> (6,741)
<TOTAL-ASSETS> 168,661
<CURRENT-LIABILITIES> 61,996
<BONDS> 0
0
0
<COMMON> 274
<OTHER-SE> 106,346
<TOTAL-LIABILITY-AND-EQUITY> 168,661
<SALES> 73,844
<TOTAL-REVENUES> 89,242
<CGS> 3,719
<TOTAL-COSTS> 19,117
<OTHER-EXPENSES> 77,170
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 278
<INCOME-PRETAX> (1,812)
<INCOME-TAX> 89
<INCOME-CONTINUING> (1,901)
<DISCONTINUED> (1,901)
<EXTRAORDINARY> (1,901)
<CHANGES> (1,901)
<NET-INCOME> (1,901)
<EPS-BASIC> (0.07)
<EPS-DILUTED> (0.07)
</TABLE>