P10 protocol IRC services, simple, scalable, for delphi and freepascal, can run on Windows, linux and freeBSD. it is easy to code new service bot "modules" for it.
LanChat2 TBX is a modern server-less network chat. It provides support for channels and private dialogues. Nearly all features of today's chats are included, like text formatting, smilies,... LanChat2 TBX has no need of any server infrastructure
RemoteCX is the all in one LEGO Mindstorms robot control application. It includes a server with which the included distributable client can control the robot with, while viewing video from a video server. Other features include custom keyboard controls.
Direct Connect (www.neo-modus.com) Client written in Delphi, maybe later portable to kylix/linux. Multi-threaded server connections and down-/uploads. Later on better compression for DcList\'s and advanced communication ways with Dc++ and opendcd (hosted
AUXChat has died, the source was lost, and the project was not finished. A rewrite is under way, and as soon as some code is anywhere near functional, this site will be updated.
ModulChat is an Open Souce Chat Client and Server. The Client does just send data to the server and requests data from server. the whole rest is done by server. The server has got a little script interpreter.