FluxBB is a fast, light, user-friendly forum application for your website.
To install FluxBB, run the following commands from your command line:
git clone git://github.com/fluxbb/fluxbb2.git
curl -s https://getcomposer.org/installer | php
php composer.phar install
After that, you can open install.php in your favorite browser. :)