The links in the forums are generally those that are/were active for individual maps not in an official map pack.
The official downloads are in the
filebase. However Some of the old RTCW files don't appear to be there any more so you may have to find them on some internet RTCW file server.
As for Fritzbot ET; The filebase is complete as to released waypoints. Other waypoints that are in progress may or may not be available for download. If you know who is working on a waypoint you can ask nicely if you can help test it for them. Myself I maintain 2 sites (
1,
2) as sort of a RCS file storage of waypoints I am working on. They are open for anon downloads in your browser. Feedback is appreciated but optional.