Outsource Partners International (OPI) [ http://www.opiglobal.com/ ]
Provides finance, accounting, and tax business process outsourcing (BPO) services.

The Outsourcing Institute [ http://www.outsourcing.com/ ]
A neutral outsourcing resource dedicated to providing outsourcing information, outsourcing research, outsourcing networking opportunities and customized outsourcing services and solutions to the outsourcing industry.