Enigma2 is a framebuffer-based zapping application (GUI) that is primarily targeted to physical set-top-boxes running embedded Linux (OpenEmbedded based firmware distributions), however Enigma2 can technically also run on regular PCs, but it is not common. (Also it's possible to run Enigma2 on RaspberryPi devices with Open Vision images and external USB tuners)
While the Enigma2 software was originally developed by Dream Multimedia for their Dreambox series, the opendreambox.org has made Enigma2 into an popular open source based firmware platform for set-top boxes and it is used by a numb