MyBB

1.8.7 (March 2016)

MyBB is the free and open source, intuitive, extensible, and incredibly powerful forum software you've been looking for. With everything from forums to threads, posts to private messages, search to profiles, and reputation to warnings, MyBB features everything you need to run an efficient and captivating community. Through plugins and themes, you can extend MyBB's functionality to build your community exactly as you'd like it.

Features:

 Theme Editor
 Unlimited Threads
 Unlimited Polls
 Warning System
 Task Scheduling
 Plugin System
 Private Messaging
 Calendars/Events
 User Promotions
 Newsletters

Requirements:

 PHP 5.2 or higher
 MySQL 5 or higher or
 PostgreSQL 8.1 or higher or
 SQLite 3 or higher
 SimpleXML
 mbstring
 GD Library