2chbbs
2channel-like PHP/MySQL anonymous bulletin board software with support for recursive BBCode.
Besides PHP/MySQL the only requirement is the GD PHP graphics library. If your PHP installation doesn't include it you can install doing:
apt-get install php5-gd
And restarting your HTTP server, for instance:
/etc/init.d/apache2 restart
**This is experimental software. Feel free to use it for your board.
There's an instance of this board running at http://paul.16mb.com