from : http://www.aspl.es/vortex/
Vortex Library is an implementation of the RFC 3080 / RFC3081 standard definitions, known as the BEEP Core protocol,implemented on top of the TCP/IP stack, using Clanguage.
It comes with a complete XML-RPC over BEEP RFC 3529support, complete support for TUNNEL profile (which allows to perform proxy operations for every BEEP profile developed), supportfor HTTP proxies and more.
Vortex Library has an API that is consistent and easy touse. It will allow you to write application protocols reallyfast. Vortex Library API design is prepared to be easybuilding bindings to other languages.
Vortex Library is developed by Advanced Software Production Line,S.L. (http://www.aspl.es) and released under the terms of the LGPL (TheGNU Lesser General Public License). This allow you to develop closedsource applications as well as open source. In fact, both models arewelcome.