From the Mupen64Plus Google Code page:

Snes9x is a portable, freeware Super Nintendo Entertainment System (SNES) emulator. It basically allows you to play most games designed for the SNES and Super Famicom Nintendo game systems on your PC or Workstation

GitHub Page:

snes9x-gtk (Linux port):

Downloads Windows Mac OS X Linux Android
Download mirrors list SNES9x EX