EXHIBIT 21 - Subsidiaries of the Registrant Jurisdiction Corporation of Incorporation - ----------- ------------------ Kronos Computerized Time Systems, Inc. Canada Kronos Systems Limited United Kingdom Kronos International Sales Corp. U.S. Virgin Islands Kronos Securities Corporation Massachusetts Kronos S/T Corporation Massachusetts Kronos de Mexico, S.A. de C.V. Mexico Kronos Australia Pty. Ltd. Australia Kronos Solutions Pty. Ltd. South Africa