Javatari - Javatari is a multiplayer Atari 2600 emulator written in pure Java with no external libs.
Frodo - Frodo is a robust Commodore 64 Emulator for the Macintosh.
Stella - Stella is a multi-platform Atari 2600 VCS emulator released under the GNU General Public License...
VICE - Bring loops to life with the loop slicer plugin for Mac and Windows.
Mame - MAME stands for Multiple Arcade Machine Emulator.
C64 Forever - C64 Forever is a revolutionary Commodore 64 emulator, preservation and support package.