IntelliJ (makers of the Java IDE everyone loves) have released a Ruby on Rails plugin for IDEA. TextMate is a great editor, but there is lots of room for growth in the Ruby on Rails tools market. I’d love to be able to run my Rails applications in a visual debugger, and better profiling tools would be nice as well. I’d also also love to edit my Ruby on Rails code in an editor with real refactoring support as well.