<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.


<MULTIPLIER> 1,000
<CURRENCY> U.S.


                             
<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
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          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