<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 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> MAR-31-2000 <CASH> 43,459 <SECURITIES> 89,357 <RECEIVABLES> 15,366 <ALLOWANCES> (983) <INVENTORY> 318 <CURRENT-ASSETS> 148,566 <PP&E> 11,420 <DEPRECIATION> (5,796) <TOTAL-ASSETS> 161,160 <CURRENT-LIABILITIES> 42,666 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 270 <OTHER-SE> 117,881 <TOTAL-LIABILITY-AND-EQUITY> 161,160 <SALES> 22,480 <TOTAL-REVENUES> 26,619 <CGS> 1,225 <TOTAL-COSTS> 4,779 <OTHER-EXPENSES> 22,128 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 41 <INCOME-PRETAX> 1,321 <INCOME-TAX> 330 <INCOME-CONTINUING> 991 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 991 <EPS-BASIC> 0.04 <EPS-DILUTED> 0.03