RE: [Rails] Code Editor for Ruby both .rb and .rhtml

If you're on Windows or Linux, give Radrails a try... I have had good luck with it, but it is a little heavier than just an editor. It's built on the Eclipse platform.

there’s also a color scheme [1] for RadRails that is similar to Black Pearl [2] theme for Textmate



vim has some nice plugins for rails, take a look at the wiki:

version 7 can give you some completion functions