This is the codebase for arxaliv.org. No readme yet, but perhaps one day once the fires are put out and once there are other people interested in the code base. For now here is the readme for the reddit code base that this is a fork of.
This is the primary codebase that powers reddit.com.
You can also chat with us via IRC in #reddit-dev on FreeNode.
To set up your own instance of reddit to develop with, we have a handy install script for Ubuntu that will automatically install and configure most of the stack.