1 EXHIBIT 21.01 LIST OF REGISTRANT'S SUBSIDIARIES PERCENTAGE OWNED NAME JURISDICTION OF ORGANIZATION BY REGISTRANT ---- ---------------------------- ------------- CompReview, Inc. California 100% Retek Information Systems, Inc. Delaware 100% Retek Information Systems Inc. Canada 100% Retek Information Systems Ltd. United Kingdom 100% Retek Information Systems Pty. Ltd. Australia 100% Retek Information Systems France 100% Retek Information Systems GmbH Germany 100% Risk Data Corporation California 100% Aptex Software Inc. California 87.2%