Exhibit 21.1


                         Subsidiaries of the Registrant





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

Pegasystems Limited                          England

Pegasystems Proprietary Limited              Australia

Pegasystems Investments Inc.                 United States

Pegasystems Worldwide Inc.                   United States

Pegasystems Company                          Canada

Pegasystems Private Limited                  Singapore

GDOO AB                                      Sweden