Is Documentation Holding Open Source Back?

A very good, succinct guide to the essential information that a software/technique/project website should contain.

MySQL Cheat Sheet

Every once in a while I can’t use phpMyAdmin for one reason or another, and in that case, it’s very helpful to have a quick, documented list of command line options.

RDoc Documentation

I always seem to have a hard time finding the reference info I need for RoR. This site helps a ton!