Rosetta Code

A Sysadmin's Unixersal Translator (ROSETTA STONE) OR What do they call that in this world? http://bhami.com/rosetta.html

Quite helpful if you find yourself having to deal with some ancient box from the age of the Unix Wars.

You should also visit this website which is in the same vein : http://99-bottles-of-beer.net/

"this Website holds a collection of the Song 99 Bottles of Beer programmed in different programming languages. Actually the song is represented in 1323 different programming languages and variations. For more detailed information refer to historic information."

And http://pleac.sourceforge.net/