MyBB review 2026: explore this free open-source PHP forum software, its plugin ecosystem, themes, licensing, and how it compares to other bulletin board…
MyBB is a free, open-source forum platform that webmasters install on their own servers to run threaded discussion communities. Originally conceived in 2002 as a fork of the XMB forum project (via an interim release called DevBB), MyBB has been developed continuously by a volunteer community known as the MyBB Group since its 1.0 release in December 2005.
Unlike hosted, subscription-based community tools, MyBB is entirely self-hosted and free to download, modify, and redistribute under the LGPL license. It is written in PHP and supports MySQL, MariaDB, PostgreSQL, and SQLite databases, making it compatible with most standard web hosting environments.
MyBB provides the core toolkit expected of a bulletin board: threaded topics and posts, user registration and profiles, private messaging, moderation and usergroup permission controls, and a template/theme system for visual customization.
A mature plugin architecture lets administrators extend functionality with spam protection, SEO-friendly URLs, social login, mobile-responsive themes, and other community-built add-ons accumulated over roughly two decades of development. Multi-language packs and database failover support round out the feature set.
MyBB's core software is completely free with no tiered plans, since it is an open-source project rather than a commercial product. Costs to operators are limited to their own web hosting and any optional premium third-party plugins or themes purchased from independent developers in the MyBB ecosystem.
Yes, MyBB is free and open source under the LGPL license, with no cost to download, install, or modify.
MyBB is developed and maintained by the MyBB Group, a volunteer community rather than a commercial company.
MyBB supports MySQL, MariaDB, PostgreSQL, and SQLite, including database failover.
Yes, MyBB is self-hosted software that you install on your own PHP-compatible web server.
Yes, MyBB has a large community-built library of plugins and themes to extend and customize forums.
Common alternatives include phpBB, Simple Machines Forum, Flarum, NodeBB, and Discourse.