Exhibit 21.1

SUBSIDIARIES OF PEGASYSTEMS INC.

Name of Subsidiary	State or Jurisdiction of Entity
Antenna Acquisition Corp.	Delaware
Antenna Canada, Inc.	Canada
Antenna Dexterra Asia Pacific PTY Ltd.	Australia
Antenna Dexterra, Inc.	Delaware
Antenna Dexterra International, Inc.	Delaware
Antenna Software India Private Ltd.	India
Antenna Software, LLC	Delaware
Antenna Vaultus Holdings, Inc.	Delaware
Antenna Vaultus, Inc.	Delaware
Antenna Volantis Ltd.	United Kingdom
Antenna Volantis Mobile Systems Private Ltd.	India
Antenna Volantis, Inc.	Oregon
Chordiant Software Europe Limited	United Kingdom
Chordiant Software International BV	Netherlands
Chordiant Software International Limited	United Kingdom
Pegasystems AG	Switzerland
Pegasystems Bermuda Limited	Bermuda
Pegasystems BV	Netherlands
Pegasystems Canada Inc.	Canada
Pegasystems France, S.A.R.L.	France
Pegasystems GmbH	Germany
Pegasystems Investment Inc.	Massachusetts
Pega Japan K.K.	Japan
Pegasystems Limited	United Kingdom
Pegasystems Mauritius	Mauritius
Pegasystems Pte Limited	Singapore
Pegasystems PTY Limited	Australia
Pegasystems Rus LLC	Russia
PEGASYSTEMS Software (Beijing) Co., Limited	China
Pegasystems Sp. Z o.o.	Poland
Pegasystems Spain, S.L.	Spain
Pegasystems Worldwide Inc.	Massachusetts
Pegasystems Worldwide India Private Limited	India
RPA Antenna Inc.	New Jersey