chat forums software?

[groovin]

i noticed that most of the forums i visit all run an interface that looks strikingly similar to others... like this forum looks alot like justlinux, and so forth. I was wondering if there were common freeware or opensource programs cirulating. if so, what are they? thanks

 

[n0cmonkey]

phpbb is pretty big.

 

[WobbleWobble]

This forum is running FuseTalk, but it's not free nor is the ColdFusion server that it runs on.

phpBB is a common system and is free as is XMB.

 

[skyking]

openBB is also free.

 

[groovin]

thanks guys