Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 0-23852) of MRO Software, Inc. of our report dated February 21, 2002 relating to the financial statements of MainControl, Inc., which appears in the Current Report on Form 8-K of MRO Software, Inc. dated August 12, 2002. /s/ PricewaterhouseCoopers LLP Boston, Massachusetts August 12, 2002