- Terra - JS library for simple biological simulations and cellular automata. 
- Lenia - 2D cellular automata with continuous space, time and states. It produces a huge variety of interesting life forms. 
- Life - Swift implementation of Conway's Game of Life. 
- Tock - Theory Of Computing toolKit. Can simulate the automata taught in standard theory of computation courses. 
- conwayste - Multiplayer Conway's Game of Life.