Good starting places:

UNFINISHED. This may be cool some day.

A groupware compression engine for GT as described in the paper.

Client side of GT.

Server side of GT.

Speech through the internet. Uses speex and GT.

Code to run a chat room client over axis.

Code to run a chat room axis "server".

C# remoting example of same application, shared library.

C# remoting example of same application, client side.

C# remoting example of same application, server-side.