Danbooru is a powerful image board system which uses tagging extensively. It is built on RubyOnRails. This HOWTO explains how to install it on Ubuntu and other Debian-like distros; it has been tested with Ubuntu 6.06 and Ubuntu Feisty. Prerequisites Install this and more. There used to be a more complete list on the wiki, most of which I had already installed. Additions are welcome. Note: Ensure t