About Flatbb - Free open-source forum in plain PHP
Free, open-source forum in plain PHP: no framework, no Composer, no build step. Unzip, open the URL, install on SQLite or MySQL. Plugin marketplace and AI-friendly plugin docs.
FlatBB is a free MIT-licensed open-source forum in plain PHP 8.1+. No Composer, Docker, or build step: unzip and install on affordable shared hosting with SQLite or MySQL. It includes multilingual support, built-in RTL, Markdown, search, dark mode, and an AI-friendly plugin marketplace.
