Exhibit 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Board of Directors and Shareholders GraphOn Corporation We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-88255 and No. 333-40174) of GraphOn Corporation of our report dated February 7, 2003, relating to the consolidated financial statements, which appears in this Form 10-K. We also consent to the incorporation by reference of our report dated February 7, 2003, relating to the financial statement schedule, which appears in this Form 10-K. Our report on the consolidated financial statements contains an explanatory paragraph regarding the Company's ability to continue as a going concern. /s/ BDO Seidman, LLP BDO Seidman, LLP San Jose, California March 28, 2003