Rounder is an open source poker client and server. It is written in Python and released under the GPL. Primary user interface is GTK+, with an additional partially completed curses interface.
NOTE: This project has been abandoned. Development has been stagnant for some time, and is unlikely to resume. There is now a very neat open source poker project and community that is everything Rounder set out to be and then some. Check out PokerTH.
First cut, functional $2/4 limit hold'em across the network, but no persistent stats or accounts. Just choose a name/password, login, grab a seat and start playing with $1000 at your disposal. Still quite rough around the edges and almost certainly contains bugs.
rounder-0.0.1.tar.gz: MD5 d99dd7c446c7441cd7caf26a8ba59b54
Rounder is seeing relatively little development at this point in time, but feel free to try and stop by #rounder on the freenode IRC network.
The following are required to run Rounder:
git clone git://github.com/dgoodwin/rounder.git
Patches are welcome. A TODO list is loosely maintained in a file in the root of the checkout.