A Raining World, A Brave Heart.

a6hi:

Nothing suffices the quick reference cards, that you could post almost anywhere (ur desk board, walls etc.), making life easy of a software developer by squeezing a huge spec or doc into quick-read, easily covering almost all aspect of the content. In this context, I would like to share this site that has got collection of some very desirable cheatsheets on C, C#, Java, Perl, PHP, Python, Linux (& Unix), ROR, SQL, UML, XML, CVS, SVN and many more.

I love it.