Wired Tracker
Wired Tracker is the Wired tracker server. Wired servers can register with the tracker with their name, URL and some other vitals, and clients connecting to the tracker will be able to retrieve a listing of all online servers.
Wired Tracker for Mac OS X runs on Mac OS X 10.4.11 and later, and is a universal application that runs natively on both Intel and PowerPC-based Macs.
Wired Tracker builds and runs on most POSIX compliant systems, including Mac OS X, Solaris, FreeBSD, OpenBSD and Linux.