От: Your Favorite Forum CMS
One suggestion Blinky, myBB is one of the best free forum CMS and it should be listed
About my opinion - IPB is one of the really best CMS, but the price may stop many ppl to buy it. A lot of features, big community and excellent support are just few of the IPB's advantages.
Otherwise, if you dont wanna give some money - myBB is one great solutin, it's easier to manage that phpBb and with good seo, nice designs and easy to modify
Feel free to ask here questions about the forum CSM, I'll be around to answer, if I can help you
