<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-31-1999 <PERIOD-END> MAR-31-1999 <CASH> 54,407 <SECURITIES> 0 <RECEIVABLES> 3,866 <ALLOWANCES> (532) <INVENTORY> 104 <CURRENT-ASSETS> 58,429 <PP&E> 7,576 <DEPRECIATION> (2,724) <TOTAL-ASSETS> 63,602 <CURRENT-LIABILITIES> 19,012 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 232 <OTHER-SE> 43,369 <TOTAL-LIABILITY-AND-EQUITY> 63,602 <SALES> 6,963 <TOTAL-REVENUES> 8,697 <CGS> 456 <TOTAL-COSTS> 1,962 <OTHER-EXPENSES> 9,637 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> (2,616) <INCOME-TAX> 0 <INCOME-CONTINUING> (2,616) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (2,616) <EPS-BASIC> (0.14) <EPS-DILUTED> (0.14)