Everyone who attended RubyConf '04 already got a sneak peak at this, 
but now it's finally here for the mere mortals as well. We've released 
TextMate 1.0. It's a code and markup editor for OS X that ships with 
syntax highlighting and other goodies for Ruby (and Rails).

Many thanks to all the folks at RubyConf that offered suggestions. 
Especially thanks to Rich Killmer who hacked a bit on the syntax 
highlighting file and got interpolated strings and regexps to look even 
nicer. He was also the first to buy a license and hereby test the 
infrastructure. Thanks a bunch, mate!

TextMate: http://macromates.com/
--
David Heinemeier Hansson,
http://www.rubyonrails.org/  -- Web-application framework for Ruby
http://www.instiki.org/      -- A No-Step-Three Wiki in Ruby
http://www.basecamphq.com/   -- Web-based Project Management
http://www.loudthinking.com/ -- Broadcasting Brain
http://www.nextangle.com/    -- Development & Consulting Services