Internal Program Version: OSP Toolkit  3.6.1

The OSP Toolkit is a complete development kit for software developers
who want to implement the client side of the European
Telecommunication Standards Institute's (ETSI) Open Settlement
Protocol. The OSP Toolkit includes source code written in ANSI C,
test tools and extensive documentation on how to implement OSP. A
hosted OSP test server is freely available on the Internet for all
developers to test their OSP implementation.

http://sf.net/projects/osp-toolkit