Top 7 state-machines open source projects

A small .Net Standard library used to model simple State Machines

@microstates/ember - Official Microstates bindings for Ember.js

A Buffet Of C++17 State Machines

GNU Guile State Machine Compiler

Event-based Orchestration of Serverless Workflows

Visual Studio extension to support visual design of stateless state machines. Support for Visual Studio 2012/2013/2015/2017.

Frame is a markdown language for creating state machines (automata) in 8 programming languages as well as generating UML documentation.