galpy
The premium Open Source alternative to NEMO Toolbox
🎯 Best for:Modeling stellar orbits and galactic potentials in the Gaia era.
What is galpy?
Calculates orbits and potential models for stars within the Milky Way and other galaxies. Supports integration of various gravitational potentials and action-angle coordinate transformations.
Tech Stack
PythonPhysics & Astronomy
Why galpy?
- • Fast C-based integration
- • Comprehensive potential library
- • Excellent documentation
Limitations
- • N-body support is limited
- • Complex coordinate systems
- • Requires strong dynamics background
3/2/2026
Last Update
112
Forks
4
Issues
BSD-3-Clause
License
Financial Leak Detected
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Competitor Cost
-$1,440
/ year (est. based on NEMO Toolbox)
Self-Hosted
$0
/ year
Team Size10 Users
150+
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