Copernicus
NASA’s high-fidelity trajectory design and optimization system for Earth, lunar, libration-point, and interplanetary missions.
ESA SNAP
ESA’s open-source desktop platform and toolboxes for processing Sentinel and other Earth-observation data.
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.
SPICE-enhanced Cosmographia
A free NASA/JPL mission-visualization application for SPICE-driven trajectories, attitudes, instruments, and observation geometry.
NASA Operational Simulator for Space Systems (NOS3)
A NASA open-source digital-twin and software-simulation environment for spacecraft integration and test.
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.