phpBB is an open source forum application. Initially released in 2000, phpBB is currently the most used free forum application with millions of people using the application every day.
phpBB is a high powered, fully scalable, and highly customisable open-source bulletin board package. Whether you want to stay in touch with a small group of friends or are looking to set up a large multi-category board for a corporate website, phpBB has the features you need built-in. Newer users will appreciate phpBB's extensive administration panel, which allows the customisation of even the most intricate features without having to edit code directly while advanced users will value the ease with which phpBB can be integrated into existing systems.