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A Flight-Proven, Multi-Platform, Open-Source Flight Software Framework

F´ (F Prime) is a component-driven framework that enables rapid development and deployment of spaceflight and other embedded software applications. Originally developed at the Jet Propulsion Laboratory, F´ has been successfully deployed on several space applications. It is tailored but not limited to small-scale spaceflight systems such as CubeSats, SmallSats, and instruments.

Please Visit the F´ Website: for more information.

What does F´ provide

  • An architecture that decomposes flight software into discrete components with well-defined interfaces
  • A C++ framework that provides core capabilities such as message queues and threads
  • Modeling tools for specifying components and connections and automatically generating code
  • A growing collection of ready-to-use components
  • Testing tools for testing flight software at the unit and integration levels.

Learn more about F' key features here.

System Requirements

  1. Linux, Windows with WSL, or macOS operating system
  2. git
  3. CMake 3.16+. CLI tool must be available on the system path.
  4. CLang or GNU C and C++ compilers (e.g. gcc and g++)
  5. Python 3.8+, virtual environments, and PIP

Getting Started

To get started with F´, install the F´ bootstrapping tool with:

pip install fprime-bootstrap

Then, create a new project with:

fprime-bootstrap project

See the HelloWorld Tutorial to guide you through all the steps of developing an F´ project.

New users are encouraged to read through the User Guide and explore the other tutorials.

Getting Help


To ask questions, discuss improvements, and ask for help please use the project's GitHub Discussions.

Bug reports

To report bugs and issues, open an issue here.


The F´ Community GitHub Organization contains third party contributions, more documentation of flight software development, and additional resources.


Release Notes

The version history and artifacts associated with the project can be found at Releases.