RDE: Ruby Development Environment
RDE is the development environment for Ruby scripting language.
RDE has:- syntax highlighting
- auto indent
- autocomplete
- debugger
- unicode support
- mouse guestures
- project management and files panel
- code overview panel
- and more…
Visit homepage for details, it is in English and Japanese. http://homepage2.nifty.com/sakazuki/rde_e.html