vBulletin - customizable forums package
vBulletin is the ideal community solution for all medium-to-large sites.
PHP MySQL
vBulletin's feature-rich content sets it apart from similar forum software.
Key features include:
* Fast and efficient database back end
* Template driven interface
* Powerful search engine
* Language system
* User profiles
* Extensive admin control panel
* Unlimited forums/posts
* Email notification
* Support for COPPA