RunBB forum, based on FeatherBB
1. Fast and light weight.
2. Easy configurable, as library package not bound with any 'skeleton'.
3. multi language with Gettext.
4. Idiorm DB layer.
5. template-driven. With extension runbb-ext-renderer possible use:
* clean PHP templates
* Fenom (fast, Smarty like syntax)
6. Markdown instead of BBCodes with s9e/TextFormatter.
7. Hooks system.
8. ACP based on bootstrap SB Admin 2.
9. composer packages plugin/extensions system.
Today not all is ready but you can preview online example