Gelide is a configurable multi emulator and multi system front-end that lets you manage any kind of emulated system (PC, console, arcade, etc.). Gelide lets you catalog and launch any game from any existing emulator under GNU/Linux. You can configure any emulator with command line parameters support.
Mini vMac emulates a Macintosh Plus, one of the earliest of the Macintosh computers. It can run old Macintosh software that otherwise couldn't be used on recent machines. Mini vMac requires a ROM image file to run, and so can be legally used only by those who own a Macintosh Plus.