Rejex lets you craft regular expressions on-the-fly
Rejex is a very handy little site for building and testing regular expressions on the fly. It's composed of four simple text boxes and a very informative cheat sheet (not shown above, but after the jump). You feed your text into the "Test String" box (the middle one), and then your expression into the top box, and immediately see the matches in the bottom box. Here I am searching for instances of ...





