Copernicus
NASA’s high-fidelity trajectory design and optimization system for Earth, lunar, libration-point, and interplanetary missions.
PyKEP
ESA’s open research toolbox for interplanetary trajectory design, Lambert problems, and low-thrust optimization.
OpenVSP
NASA’s open-source parametric aircraft geometry tool for conceptual design and engineering analysis.
SPICE-enhanced Cosmographia
A free NASA/JPL mission-visualization application for SPICE-driven trajectories, attitudes, instruments, and observation geometry.
NASA/JPL SPICE Toolkit
NASA/JPL’s free toolkit and data system for mission geometry, ephemerides, observation planning, and science operations.
FreeFlyer
Commercial astrodynamics software for space mission design, analysis, and operations across the mission lifecycle.
TudatPy
TU Delft’s open-source Python interface for numerical astrodynamics, propagation, estimation, and space research.