I occasionally us TextMate as an alternative to Eclipse.
It’s a Mac OSX only text editor with plenty of extra features. I’ve used is ability to compile with MTASC with some success, see my post ‘XTRACE, MTASC and TextMate‘.
Also, G Design’s 2 Page Cheat Sheet is excellent.
The TextMate online manual provides a useful key for the Glyphs used in the Cheat Sheets.