Zandronum

I just want to know because I have a backup of best-ever, but I assumed that allfearthsentinel was the continuation of it and added all the files from that server to the backup. If they don't have the same files, I guess I have a mix of both and don't know which wads belong to which.

Yes. TSPG started with a dump of Best-Ever's mods so almost all that was on there should be on TSPG too ontop of a bunch more people have uploaded over the years.