Cerebrum Halo CE Game Tracking

[klange]

Lets say that someone made a server with no score limit or time limit. Would this app let the server recognize you if you rejoined the server, then give you your score from last time you were on the server?

That would be the job of the server extension. You should request that for rec0.

Clans are purely a Cerebrum thing, and would be fairly simple to implement, but yes, they're an after though, not a primary feature.