. . . Exhibit 8.1 SUBSIDIARIES OF GEAC COMPUTER CORPORATION LIMITED COMPANY JURISDICTION Geac Computer Corporation Limited Canada Geac Canada Limited Canada Geac (Delaware) Partnership Delaware Geac ULC Nova Scotia Geac USA L.L.C. Delaware 2019856 Ontario Inc. Ontario Progiciels JBA Quebec Inc. Quebec 915873 Ontario Ltd. Ontario 915874 Ontario Ltd. Ontario Geac (Canada) Services Limited Ontario 877025 Alberta Ltd. Alberta Geac Computers Hong Kong Limited Hong Kong GEAC Hungary Asset Management Company Limited Hungary Geac International Finance Corporation Ireland Geac Computers, Inc. Missouri Geac Enterprise Solutions, Inc. Georgia News Holdings Corp. Delaware Interealty Corp. Colorado PropertyChannel, Inc. Virginia Remanco International, Inc. Delaware Geac Library Systems, Inc. Delaware Extensity, Inc. Delaware COMPANY JURISDICTION Extensity Europe Limited UK Comshare, Incorporated Michigan Comshare (U.S.), Inc. Michigan Comshare Limited Canada Comshare Holdings Company UK Comshare Limited UK Comshare International Limited UK Geac (UK) Holdings Limited UK & Wales Geac Software Solutions Limited UK & Wales Geac Computer Systems (UK) Limited UK Geac Software Services Holdings Limited UK Geac Software Services Medium Systems Limited UK MAI United Kingdom Limited UK Remanco Systems Limited UK Mainpac Limited UK Computer Library Services International Limited UK Geac UK Limited UK Tekserv Computer Services Limited UK Geac Enterprise Solutions Holdings Limited UK Geac Enterprise Solutions Limited UK JBA Investments Limited UK JBA (Northern) Limited UK JBA (Wesex) Limited UK Geac Enterprise Solutions s.r.o. Czech Republic - 2 - COMPANY JURISDICTION Nexus Solutions Limited UK JBA Property Management Limited UK ACN 002 474 893 Pty Ltd Australia ACN 007 234 609 Pty Ltd Australia ACN 004 842 611 Pty Ltd Australia ACN 006 036 728 Pty Ltd Australia JBA sp. Z.o.o. Poland JBA Software Products Lanka (Private) Limited Sri Lanka Geac Enterprise Solutions Deutschlang Gmbh Germany Geac Enterprise Solutions Austria Gmbh Austria Geac Enterprise Solutions Development Limited UK Generator Systems (UK) Limited UK JBA Software Products (Ireland) Limited Ireland JBA (UK) Limited UK JBA International Philippines, Inc. Philippines Inform Solutions Limited UK JBA Employee Benefit Trustee Company Limited UK JBA (Information Processing Services) Limited UK Olympix Software Limited UK Phoenix Business Systems Recovery Limited UK Geac Enterprise Solutions (Ireland) Limited Ireland JBA Asia (N) Sdn Bhd Malaysia JBA International Software Pte. Ltd. Singapore - 3 - COMPANY JURISDICTION Geac Nordic A/S Denmark Geac Computers S.L. Spain Geac Italia S.r.L. Italy Geac Computers Brasil Ltda Brazil Geac Computers (Puerto Rico) Inc. Puerto Rico Geac Holdings ApS Denmark Geac Enterprise Solutions A/S Denmark Kiloware ApS Denmark Geac France SA France C.I.A.G. France Geac Benelux B.V. Netherlands S.A. Geac N.V. Belgium Runtime Holdings B.V. Netherlands Runtime B.V. Netherlands JBA Italia S.R.L. Italy Geac spol s.r.o. Czech Republic Geac Computers Japan KK Japan Geac Computers Philippines Inc. Philippines Geac Computers (Singapore) Pte Ltd Singapore Geac Computers (M) Sdn. Bhd. Malaysia Geac Computers NZ Limited New Zealand Management Data Polska Sp. z.o.o. Poland Management Data Praha spol s.r.o. Czech Republic Geac Computers Pty Ltd Australia - 4 - COMPANY JURISDICTION Computer Library Services International (Australia) Pty Limited Australia Cybergraphic Systems GmbH Germany Geac Computers (Mexico) S.A. de C.V. Mexico Geac Computers (Thailand) Limited Thailand - 5 -