I don't work with regex every day, the same applies to many developers I guess.
So I was very happy when I found the excellent regex cheat sheets from IloveJackDaniels.com. But here one day it turned out that page was gone - so to save anyone else the trouble, they have moved to addedbytes.com.
And here's a link to their cheat sheets:
You'll find two versions of Regular Expression cheat sheets, along with CSS, Python, Javascript and more.
