Good starting places:

Adventure2D.zip

UNFINISHED. This may be cool some day.

Compression.zip

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

GTClient.zip

Client side of GT.

GTServer.zip

Server side of GT.

SpeexW.zip

Speech through the internet. Uses speex and GT.

axischathostelclient.zip

Code to run a chat room client over axis.

axischathostelsharedlibrary.zip

Code to run a chat room axis "server".

remotingchathostel.zip

C# remoting example of same application, shared library.

remotingchathostelclient.zip

C# remoting example of same application, client side.

remotingchathostelserver.zip

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