Copernicus
NASA’s high-fidelity trajectory design and optimization system for Earth, lunar, libration-point, and interplanetary missions.
OpenRocket
A free, open-source, cross-platform application for model-rocket design and flight simulation.
RocketPy
An MIT-licensed Python library for high-power rocket trajectory, weather, dispersion, and six-degree-of-freedom simulation.
OpenVSP
NASA’s open-source parametric aircraft geometry tool for conceptual design and engineering analysis.
SU2
An open-source multiphysics simulation and design suite for CFD, aerodynamic analysis, and shape optimization.
NASA/JPL SPICE Toolkit
NASA/JPL’s free toolkit and data system for mission geometry, ephemerides, observation planning, and science operations.
NASA Core Flight System (cFS)
NASA Goddard’s open-source flight-software framework bundle and common applications for spacecraft systems.
F Prime
NASA/JPL’s component-driven, open-source framework for spaceflight and embedded software applications.
NASA Trick Simulation Environment
NASA’s open simulation environment for model integration, execution control, data recording, and analysis.
FreeFlyer
Commercial astrodynamics software for space mission design, analysis, and operations across the mission lifecycle.