Virtual machines

software that emulates an entire computer, often used to provide a different operating system or hardware architecture than the host system

open-source JavaScript engine developed by Google

programming language

Pascal programming language system

PICO-8 is a virtual machine and game engine created by Lexaloffle Games. It is a fantasy video game console that mimics the limited audio-visual capabilities of 8-bit systems from the 1980s to encourage creativity and ingenuity in producing games without being overwhelmed with the many possibilities of modern tools and machines. Such limitations also give PICO-8 games a particular look and feel.

The Z-machine is a virtual machine that was developed by Joel Berez and Marc Blank in 1979 and used by Infocom for its text adventure games. Infocom compiled game code to files containing Z-machine instructions (called story files or Z-code files) and could therefore port its text adventures to a new platform simply by writing a Z-machine implementation for that platform. With the large number of incompatible home computer systems in use at the time, this was an important advantage over using native code or developing a compiler for each system.

free software virtual machine

TIC-80 is a free and open-source fantasy video game console for making, playing, and sharing games on a limited platform that mimics the 8-bit systems of the 1980s. It has built-in code, sprite, map, music, and sound effect editors, as well as a command line interface that allow users to develop and edit games within the fantasy console.

framed|Screenshot of Pong implemented in CHIP-8 thumb|Telmac 1800 running CHIP-8 game Space Intercept (Joseph Weisbecker, 1978)

abstract machine for the execution of Prolog

Simics is a full-system simulator or virtual platform used to run unchanged production binaries of the target hardware. Simics was originally developed by the Swedish Institute of Computer Science (SICS), and then spun off to Virtutech for commercial development in 1998. Virtutech was acquired by Intel in 2010. Currently, Simics is provided by Intel in a public release and sold commercially by Wind River Systems, which was in the past a subsidiary of Intel.