Avionics

1. Paparazzi UAV - An open source drone autopilot system that provides real-time flight control, navigation, and communication.

2. OpenPilot - An open source autopilot software for UAVs and small autonomous aircraft that provides advanced flight control and stabilization.

3. Simulink - A simulation software by MathWorks that is widely used for modeling and simulating aerospace systems, including flight control systems and avionics.

4. FlightGear - An open source flight simulator that provides realistic simulations of aircraft behavior and performance.

5. OpenFOAM - An open source computational fluid dynamics software that is used to simulate aerodynamic flow and heat transfer in aerospace applications..

7. OpenRocket - An open source software for designing, simulating, and analyzing model rockets and their performance.

8. OpenVSP - An open source parametric aircraft geometry modeler that allows users to design and analyze aircraft configurations.

9. Gpredict - An open source software for tracking and predicting the orbits of satellites, including amateur radio satellites.

10. PyAOS - An open source library for atmospheric and oceanographic sciences that provides tools for analyzing and visualizing weather and climate data.