Currently ride is only viable for rails or NewGem ruby projects, though
support for more generic projects is on the way.  

USAGE:
from the root of a rails or newgem project -
  $ ride .
  $ ./script/ride --help
  $ ./script/ride <options>

With no options you get an IDE with 9 windows open, irb on window 1 and
a root file browser on 2.  The other windows suppose you're in a rails tree,
but can be changed with command line options or changes to the template
in config/.screenrc.code.erb, which you can replace or copy to make
a new screen template.  The home directory in the IDE is changed to
the projects' root so cd ~ takes you to the project root on a console window.
Your actual home is available via the $REAL_HOME environment variable.  

Tip: Hit F12 while editing any ruby file and the current state of the buffer
     will be loaded in irb, and you'll be switched to that window

For more information on ride, see http://rubyists.com/