Ruby Universal Binary Installer that serves everything to deploy Ruby Applications on OSX Machines - Panther, Tiger or Leopard. You don't need to compile anything and you don't need Apple's Developer Tools (xcode) installed.
Wine-doors is an application designed to make installing windows software on Linux, Solaris or other Unix systems easier. Wine-doors is essentially a package management tool for windows software on Linux systems. Most Linux desktop users are familiar with package management style application delivery, so it made sense to apply this model to windows software.