Download page - http://www.phpbb.com/

One of the most popular bulletin boards, and whats best is it's free. It's high powered, fully scalable, and highly customisable open-source with hacks, templates and rank images available online. You will find once installed a user friendly interface, simply and straightforward administration panel.

Reviews

User rating - - A few hours ago, the website of the popular PHP forum software phpBB has been hacked. I had phpbb on one of my websites. It was getting a good amount of posts but it eventually just kept getting hacked. Maybe 3-4 times. The worst was a program that kept reloading my pages so the server bandwidth which was 35gb was used up in 2 days. I just ended up deleting it, was a shame because I had a few regulars who were nice people. Shame as it's a nice program.

By User - Martin