Awesome Open Source
Awesome Open Source


TinyFSM is a simple finite state machine library for C++, designed for optimal performance and low memory footprint. This makes it ideal for real-time operating systems. The concept is very simple, allowing the programmer to fully understand what is happening behind the scenes. It provides a straightforward way of mapping your state machine charts into source code.

TinyFSM basically wraps event dispatching into function calls, making event dispatching equally fast to calling (or even inlining) a function. Even in the worst case, dispatching leads to nothing more than a single vtable lookup and function call!

Key Features:

  • Entry/exit actions
  • Event actions
  • Transition functions
  • Transition conditions
  • Event payload (classes)
  • Inheritance of states and action functions

TinyFSM benefits from the C++11 template metaprogramming features like variadic templates, and does not depend on RTTI, exceptions or any external library.

Official home page:

Current version: 0.3.2


You can find the main documentation in the doc/ directory of the TinyFSM project. The latest version is also available online.


TinyFSM is a header-only library, no special installation steps are needed. Just point your compiler to the "include" directory.


So TinyFSM has proven useful for you?

I will definitively continue developing TinyFSM for free, but if you want to support me you can do so:



The source code for TinyFSM is managed using Git:

git clone

Mirror on GitHub:

git clone

If you would like to contribute or have found bugs, visit the TinyFSM project page on GitHub and use the issues tracker there.


For questions and suggestions regarding TinyFSM, success or failure stories, and any other kind of feedback, please feel free to contact the author (the email address can be found in the sources).


TinyFSM is Open Source software. It may be used for any purpose, including commercial purposes, at absolutely no cost. It is distributed under the terms of the MIT license.

Get A Weekly Email With Trending Projects For These Topics
No Spam. Unsubscribe easily at any time.
c-plus-plus (17,365
cpp11 (246
header-only (147
state-machine (102
cpp-library (46

Find Open Source By Browsing 7,000 Topics Across 59 Categories