bee is an emulator of several video game systems. It currently emulates the "Sega 8-bit sytems" Master System, ColecoVision, and SG-1000, as well as the Atari 2600/VCS. More systems will be added in the future. bee is designed to be portable, accurate, and easy to use. At this time, it is available for Windows, Mac OS X, and Linux x86.

Screenshot of bee