linux // software discussion board

• FUD Forum - A customizable forum package, with a large feature set including i18n support.
• M2F - Add-on software to the phpBB forum system which combines the functionality of a mailing list system and a phpBB forum in order to add bi-directional communication. Latest release is 1.2.6, 2007-03-09.
• Phorum - PHP Message Board - A fast and flexible Web-based discussion software designed to meet different needs -- from small to large discussion boards. Latest stable release is 5.2.12a, 2009-07-22.
• Project Beehive Forum - PHP/MySQL discussion forum software with many user-friendly features for easy setup and use.
• PunBB - A basic, fast, and lightweight discussion board without all the graphical bells and whistles. Multilingual support in a wide variety of languages. Latest release is 1.2.20, 2008-08-20.
• SLASH - The Slashdot Code - The "Slash" source code is available here; this is the code used to produce Slashdot. All the latest patches, bugfixes, documentation, and FAQs are available on this site.
• Slackjaw! - For use with the FirstClass bulletin board system with an add on for chat.
• Squishdot - The Open Source Discussion Forum Software for Zope - A plug-in module for the Zope Application Server which provides a news publishing and discussion site with a minimal amount of configuration and day-to-day administration.
• The phpBB Homepage -- Creating Communities - Open source bulletin board package based on the PHP server language.
• YaBB- Yet another Bulletin Board - A forum software package which provides a real-time chat and support system; available in Dutch, English, and German.