After a long time of not being active in the forum world, I just discovered that Invision Power Board is no longer free!

I’ve always loved Invision, more than phpBB and vBulletin – but now I guess I have to find another alternative or a version of Invision that’s not under this ridicules license (post a comment if you got it, or know which version is still considered free. I’ve managed to dig up v2.0.0 PF 3).

FUDforum is a valid alternative, but it’s pretty ugly.
phpBB 2.2 is said to be awesome, but still in alpha development and the process is slow (fair enough, open source)