Here's the deal, I use Wro4j to handle the transpilation/'building' of .coffee files to .js ones.
Now I want to have a good editor plugin which supports CoffeeScript, and I don't want to install Aptana (I only need CoffeeScript, not Python, Ruby and all the other stuff it includes and doesn't let me choose not to install...).
Many thanks!
Besides CoffeScript-Eclipse: https://github.com/adamschmideg/coffeescript-eclipse (mentioned by BluesRockAddict), the other choices I know of are:
LiClipse: http://brainwy.github.io/liclipse/
Aptana Studio 3: http://www.aptana.com/products/studio3
Have you tried coffeescript-eclipse plugin?
https://github.com/adamschmideg/coffeescript-eclipse