OpenBB is a fast, lightweight, powerful bulletin board written in PHP/MySQL. Main features include: full customization via styles/templates, instant messaging, private messaging, categories, member ranks, poll based threads, moderation, BB codes, thread notifications, Avatars, member lists, private forums and more.
The Orca Forum is a small and efficient threaded forum script perfect for a site not big enough to support a phpBB or invision board. Reading like a newsreader, with embedded javascript expand/collapse of threads, this forum is designed for complete style transparency. Use it as its own page, or style it up using the stylesheet and embed it into your existing layout. Comes with English and French language files.
Pearl is a PHP/mySQL discussion forum/bulletin board system full of features and comes with a WYSIWYG editor. Optimized coding is intended for easy modifations and integration, making it the most programmer-friendly there is.
PgWebforum is discussion forum made with a collection of PHP/HTML pages that uses Postgresql or Oracle 8 as a database. It lets you follow subjects and search boolean phrases.
Phorum is a web based message board written in PHP. Phorum is designed with high-availability and visitor ease of use in mind. Features such as mailing list integration, easy customization and simple installation make Phorum a powerful add-in to any website.
Phorum Smileys is an add-on for Phorum that allows you to integrate smileys into the Phorum application v3.2.11 or 3.3 or 3.3.2. The present archive is for Phorum 3.3.2, just go to the website for the 3.2.11 or 3.3. The last version 5.0.10 include the smileys.