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Mamba vs WinPython: catalog facts
Mamba	WinPython
Free Free and open source.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Command line	Windows
Compatible with conda packages and environments Fast dependency solving	Fully portable, no installer or registry changes Ships Spyder, JupyterLab and the scientific stack ready to use
Tied to the conda packaging ecosystem Some conda features and behaviours differ slightly	Windows only, 64-bit only Full builds are large, around 670 MB
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.