1 Exhibit 21.01 SUBSIDIARIES OF COMSHARE, INCORPORATED SUBSIDIARIES OF REGISTRANT (A) INCORPORATED In ------------------------------ --------------- Comshare Limited Canada Comshare International BV (CIBV) Netherlands Comshare Holdings Unlimited United Kingdom Comshare Limited United Kingdom Comshare International Limited United Kingdom Comshare, GmbH Germany Comshare SA France Comshare (Ireland) Limited Ireland Comshare BV Netherlands Comshare (Belgium) BV Netherlands Comshare Belgium, S.A. Belgium CSI International Holdings, Inc, Delaware Comshare Australia Pty., Ltd. Australia CS Holdings, Inc. Delaware Comshare Scandanavia ApS Denmark (a) All subsidiaries are wholly owned by their immediate parent.