Forums

PunBB

PunBB is a fast and lightweight PHP-powered discussion board. Its primary goals are to be faster, smaller and less graphically intensive as compared to other discussion boards. It is generally faster and outputs smaller, semantically correct XHTML-compliant pages.

Drupal as a forum

Drupal has a built in forum feature to work seamlessly into your existing Drual site.

Vanilla

Vanilla is an open-source, standards-compliant, multi-lingual, theme-able, pluggable discussion forum for the web.

bbPress

bbPress is forum software with a twist from the creators of WordPress. bbPress is focused on web standards, ease of use, ease of integration, and speed. They keep things as small and light as possible while still allowing for great add on features through our extensive plugin system.

phpBB

Since its creation in 2000, phpBB has become the most widely used Open Source forum solution. Like its predecessors, phpBB 3.0 “Olympus” has an easy to use administration panel and a user friendly installation process, which allows you to have a forum set up in minutes. With a large and highly customisable set of key features coupled with a standards compliant interface, phpBB will grow with, and complement your website. With millions of installations worldwide, it is no wonder phpBB is one of the most popular ways to create and support a community.