Fancy Irb Buried In The Wiki
Windozers, give ear. Prithee, try this lovely little app, hidden out of site, which gives us a graphical face for Irb. FXIrb/Experimental by Frailis and Martin DeMello. Get a nice, readable font. Custom colors.
So, what do you use to dress up Irb in Windows? Use any commandline GUIs that don’t require Cygwin or Mingw? Rxvt for Windows is great, which comes with Cygwin or MSYS.