Exhibit 21.1


                         Subsidiaries of the Registrant





    Name of Subsidiary                            Jurisdiction of Organization
- --------------------------                        ----------------------------

                                               

Pegasystems Limited                                      England

Pegasystems Party Limited                                Australia

Pegasystems Worldwide Inc                                United States

Pegasystems Investment Inc                               United States

Pegasystems Company                                      Canada

GDOO                                                     Sweden