1 Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated February 13, 1998, appearing on page F-2 of Landmark Systems Corporation's Annual Report on Form 10-K for the year ended December 31, 1997. /s/ PricewaterhouseCoopers LLP Falls Church, Virginia August 11, 1998