I'd like to play against strong bots to practice, but so far I haven't found much.
I've seen http://www.cleverpiggy.com/nlbot, but it looks like it only allows heads-up. Ideally I'd like to practice 6-max no limit hold'em games.
Alternatively, I'm open to installing/compiling open-source software. I don't care how ugly it looks or if I have to play in the terminal :)