phpBB

phpBB is one of the most widely used open source discussion forum software scripts. It supports numerous databases including MySQL, MS-SQL, PostgreSQL and Access/ODBC. phpBB is designed with "security as a priority." A vibrant online community supports this stable discussion forum software.

Features

Unlimited forums and posts
Multiple language interface
Private or public forums
Powerful search utility
Private messaging system
Complete customization with multiple styles and templates
Easy to Use Administration

Demos

phpBB Demo

phpBB Reviews

Features of phpBB Discussion Server - In his informative  article, Sean Michael Kerner "chose phpBB as open source discussion server after looking at a number of candidates and testing a number of systems."

phpBB Links

phpBB.com - Official phpBB site

phpBBHacks.com - phpBBHacks.com leads the pack for phpBB hacks, templates, related downloads and phpBB other resources, featuring a large database of hacks and templates.

Trushkin.net - Download free phpBB 2.0 themes