libtorrent is a C++ library that aims to be a good alternative to all the other bittorrent implementations around. It is a library and not a full featured client, although it comes with a working example client.
The main goals of libtorrent are:
Support the development of libtorrent
There's a mailing list, general libtorrent discussion.
You can usually find me as hydri in #libtorrent on irc.freenode.net.
Written by Arvid Norberg. Copyright (c) 2003-2006
Contributions by Magnus Jonsson, Daniel Wallin and Cory Nelson
Thanks to Reimond Retz for bugfixes, suggestions and testing
Project is hosted by sourceforge.