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MyBB vs Flarum: catalog facts
MyBB	Flarum
Free Free and open source under the LGPL-3.0 licence, supported by donations.	Free Free and open source under the MIT licence.
Self-hosted	Self-hosted
Large catalogue of plugins and themes Built-in template and theme editor	Large ecosystem of community extensions Group permissions and built-in moderation
Traditional bulletin board design rather than a modern chat-style forum Needs a PHP web server you maintain yourself	Needs a PHP server to host Version 2.0 is still a release candidate
Self-hosted	Self-hosted
Open source	Open source
License: LGPL-3.0	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.