Phorum - A free threaded, web-based bulletin board system written in PHP with a variety of backend database option available. Vanilla - PHP/MySQL forum software with multilingual support and more than 100 plug-ins. [Open source, GPL] WMForum - A very simple discussion board program written in PHP. It doesn't use any SQL database. PHP/XML Forum - A free thread-oriented, XML-based news forum. No database required. FunkBoard - A multi-thread customisable bulletin board messaging system. It uses PHP and either MySQL or PostgreSQL database. [Freeware] WowBB - Offers features such as auto install/upgrade, a WYSIWYG editor with integrated spell-checker, auto time zone detection and smart caching. Requires PHP and MySQL. ccForum - A simple, easy to use message board system. It supports single or multiple forums, user registration and anonymous posting, and forum administrators. ccForum is written in PHP and is based on a MySQL database. [Open source, GPL] Prattle - A message board system implementing a clean linear model. [Open source, GPL] UseBB - A PHP/MySQL bulletin board package designed for small to medium sized web sites. [Open source, GPL] SowiBB - Forum software written in PHP with a MySQL backend. SMF - A community software package with themes, fast message database, secure file-attaching system, and mod installation manager. [Open source, BSD license] Transverse Styles - Provides Invision Power Board skins and vBulletin styles. All skins and styles are packaged with fixed and fluid configurations. [Commercial] Unclassified NewsBoard - Unicode-supporting PHP/MySQL forum software that produces standard XHTML and CSS. [Open source, GPL] bbPress - Template-driven PHP/MySQL forum software developed by the creators of WordPress. [Open source, GPL] UBBThreads - Threaded or linear viewing of posts, address books, CSS compatible, session or cookie based, moderators, multi-language support, private forums, profanity filter, and user pictures. [Commercial] SonicBB - Free open source PHP/MySQL bulletin board software miniBB - Presents features, and requirements of the free bulletin board application with demo, downloads, manual and community forum. Premium extensions and service also available. Virtual Forums - PHP/MySQL forum software that's hosted remotely and customizable. PunBB - Aims to be a fast and lightweight PHP-powered discussion board. Licensed under GNU GPL. FluxBB - Forum software forked by four developers of PunBB that supports MySQL, PostgreSQL and SQLite and produces valid XHTML [Open source, GPL] FUDforum - PHP forum system with MySQL, PostgreSQL or SQLite backend that supports USENET and email list archiving. [Open source, GPL] W-Agora - Free forum written in PHP. It has also a guestbook, a download area, a photo gallery and a news publisher feature. It uses MySql as database. WSN Forum - Fully customizable, extensible and translateable PHP/MySQL forum script. [Commercial] XMB - PHP/MySQL forum software that supports themes, BB code, and instant messaging. [Open source, GPL] HaveFnuBB - Extensible forum software built on Jelix framework that offers 960gs-based templates. [Open source, GPL]