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                                                                    EXHIBIT 23.3


                         INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this Registration Statement on
Form S-8 of Quest Software Inc. of our report dated January 28, 2000, except as
to notes 16 and 17, which are as of September 29, 2000, relating to the
financial statements of Fastlane Technologies Inc. appearing in an amendment to
the Current Report on Form 8-K of Quest Software, Inc. dated September 11, 2000
(filed on October 5, 2000).


/s/ DELOITTE & TOUCHE LLP


Ottawa, Ontario
November 3, 2000