This is an ooold project I wrote in 2002-2004. The server runs on Linux and is written in C, and the client runs on Windows and is written in pascal.
Just launch:
$ make
Then, you have to create two directories:
$ mkdir database logs
Finally, run the daemon with:
$ ./troudukd
The client sources are available on https://github.com/rbignon/trouduk, but there is an .exe inside this repository. Just change the hostname of course, as inter-system.net and coderz.info domain names aren't available anymore.
I'm not sure this works on a real Windows, but it is ok with wine.
If you want to use a public server, insert "symlink.me:5123".