MAME / SDLMAME
MAME stands for "Multiple Arcade Machine Emulator". It provides a virtual environment where you can run software written for other platforms, namely old arcades.
SDLMAME has once been a port of the popular MAME™ emulator to the SDL library. It ran on many different platforms, including both 32- and 64-bit Linux. Since MAME 0.137 the SDL backend is part of the main source tree and no longer a port i.e. the project has been merged in the main development branch.
XMAME is an older and mostly outdated version of MAME for Linux. It has not been updated since version 0.106, which was sometime in 2006.
Older hardware tends to run XMAME more efficiently than SDLMAME. It is advised to experiment with both.
- Package: xmame-x XMame package information on Ubuntu.