ruby-growl is a platform-independent Ruby library for sending Growl notifications. Growl (http://growl.info) is a really cool notification system for Mac OS X. You can get the full scoop on ruby-growl here: http://segment7.net/projects/ruby/growl/ You can download ruby-growl as a gem: http://segment7.net/projects/ruby/growl/ruby-growl-1.0.0.gem Or as a .tgz: http://segment7.net/projects/ruby/growl/ruby-growl-1.0.0.tgz