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                                                                    EXHIBIT 99.6

 
                           CONSENT OF DAVID W. BRUNEL
 
     I hereby consent to the use of my name in the Registration Statement on
Form S-4 of VMARK Software, Inc. and any amendment thereto, as the same appears
therein under the caption "Management of VMARK Following the Merger" with
respect to my becoming a director of VMARK.
 
November 13, 1997
 


                                                    /s/ DAVID W. BRUNEL
                                            ------------------------------------
                                                      DAVID W. BRUNEL