<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL IFNORMATION EXTRACTED FROM ALLAIRE CORPORATION FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> JUN-30-1999 <CASH> 19,532 <SECURITIES> 33,971 <RECEIVABLES> 5,602 <ALLOWANCES> (547) <INVENTORY> 224 <CURRENT-ASSETS> 59,305 <PP&E> 7,938 <DEPRECIATION> (3,221) <TOTAL-ASSETS> 64,300 <CURRENT-LIABILITIES> 20,642 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 118 <OTHER-SE> 42,719 <TOTAL-LIABILITY-AND-EQUITY> 64,300 <SALES> 17,724 <TOTAL-REVENUES> 21,772 <CGS> 1,103 <TOTAL-COSTS> 4,403 <OTHER-EXPENSES> 23,701 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 206 <INCOME-PRETAX> (5,529) <INCOME-TAX> 0 <INCOME-CONTINUING> (5,529) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (5,529) <EPS-BASIC> (0.53) <EPS-DILUTED> (0.53)