SEO-Board 1.1.0RC3

SEO-Board is a forum software that's fast, free, and search engine friendly. It is the perfect solution for small and medium-sized sites.
Features:

* Written in PHP and uses MySQL as a back-end. Requires: PHP 4.3.0 and MYSQL 3.23.23.
* No bloat. No fancy features. Just blazing speed.
* Does not take too many server resources.
* PHP and HTML are separated for ultra easy customization.
* Is flexible. Can fit into your site design.
* Anti-spam protection. Admin can ban IP/IP ranges/Users/Emails.
* Full moderator support.
* Message preview; locked and sticky topics; new topics highlight.
* Search Engine Friendly: comes with Apache mod_rewrite support; cookie-based sessions (no SessionIDs in the URLs)
* Multi-language pack support.
* Support for Private, Read-Only, Post-Only, Guest, HTML-Allowed, Topic Creation-Time Sorted Forums.
* Basic BBCode, Smilie, Signatures and Avatars support.
* Support for RSS/Atom feeds
* Forever 100% free for both personal and commercial use.