FastSim consists of:
- 'Facile' a highly flexible and expressive processor-architecture specification-language.
- A compiler for the specifications which produces high-performance, fast-forwarding simulators.
A8E is a freeware Atari 800 XL emulator written in C by Sascha Springer and has been developed completely from scratch. It uses the SDL and OpenGL (optional) library for the user interface and the audio and graphics output.