<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM  
NETSCAPE COMMUNICATIONS CORPORATION'S ANNUAL REPORT ON FORM 10K/A FOR THE 
PERIOD ENDED OCTOBER 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE 
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   10-MOS                   YEAR
<FISCAL-YEAR-END>                          OCT-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               OCT-31-1998             DEC-31-1997
<CASH>                                          85,885                  55,172
<SECURITIES>                                    91,598                 129,426
<RECEIVABLES>                                  171,310                 161,526
<ALLOWANCES>                                   (6,418)                 (8,335)
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               406,680                 395,086
<PP&E>                                         244,280                 207,180
<DEPRECIATION>                                (99,394)                (58,681)
<TOTAL-ASSETS>                                 737,615                 712,271
<CURRENT-LIABILITIES>                          261,753                 203,550
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            10                      10
<OTHER-SE>                                     475,432                 508,496
<TOTAL-LIABILITY-AND-EQUITY>                   737,615                 712,271
<SALES>                                        261,457                 383,950
<TOTAL-REVENUES>                               447,809                 533,851
<CGS>                                           29,896                  36,579
<TOTAL-COSTS>                                  120,613                 113,697
<OTHER-EXPENSES>                               402,132                 475,884
<LOSS-PROVISION>                                 2,506                   7,858
<INTEREST-EXPENSE>                                  99                     425
<INCOME-PRETAX>                               (60,087)                (50,747)
<INCOME-TAX>                                         0                (11,788)
<INCOME-CONTINUING>                           (60,087)                (38,959)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                  (60,087)                (38,959)
<EPS-PRIMARY>                                   (0.63)                  (0.45)
<EPS-DILUTED>                                   (0.63)                  (0.45)
        

</TABLE>