Core War

Home: https://corewar.co.uk/, http://www.corewar.info/, http://vyznev.net/corewar/guide.html, https://sourceforge.net/projects/corewar/, https://corewar.co.uk/standards/icws94.htm, http://www.corewar.info/emulator.htm
Media: https://en.wikipedia.org/wiki/Core_War
State: mature
Keyword: simulation, programming
Code repository: https://gitlab.com/osgames/corewar.git (conversion from cvs, @created 2019, @stars 1, @forks 0), http://corewar.cvs.sourceforge.net (cvs)
Code language: C, Java
Code license: GPL-2.0 (C part), 2-clause BSD (Java part)
Developer: alexander sasha wait, Anton Marsden, Björn Günzel, Brian Haskin, Ilmari Karonen, Pavel Šavara

Two or more battle programs (called "warriors") compete for control of a virtual computer. See also SDL pMars, corewar.io with sources on Github

Building