Top 5 C++ FSM Projects

HFSM2

3 434 5.0 C++

High-Performance Hierarchical Finite State Machine Framework

Project mention: State machine library for portable embedded application (C++11) | /r/embedded | 2023-06-08

qpcpp

1 351 6.5 C++

QP/C++ Real-Time Embedded Framework/RTOS for embedded systems based on active objects (actors) and hierarchical state machines
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
CoFSM

2 74 2.2 C++

Finite State Machine using C++20 coroutines with symmetric transfer
hsmcpp

1 56 6.0 C++

C++ based Hierarchical / Finite State Machine library oriented for embedded and RTOS systems.

Project mention: State machine library for portable embedded application (C++11) | /r/embedded | 2023-06-08

Me and my team faced a similar issue since we often port code between different OS and frameworks (embedded automotive). Unfortunately, I couldn't find anything which fully satisfied our requirements so ended up creating an HSM library myself. You can see it on GitHub and check if it suits your needs: https://github.com/igor-krechetov/hsmcpp

compile-time-fsm

1 50 6.8 C++

A simple finite state machine, but without overhead!
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).