1 EXHIBIT 23.1 Consent of Deloitte & Touche, LLP INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Progress Software Corporation on Form S-8 of our report dated December 18, 1998, appearing in the Annual Report on Form 10-K of Progress Software Corporation for the year ended November 30, 1998. /s/ DELOITTE & TOUCHE LLP - ------------------------------- Boston, Massachusetts June 11, 1999