WinPython

Name: WinPython
Author: The WinPython contributors

A portable scientific Python distribution for Windows that runs from a folder without installation.

Open source (MIT)By The WinPython contributors

Free Open sourceWindows

Official websitewinpython.github.io

Download pagewinpython.github.io

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Read the WinPython documentation

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See all alternatives

About WinPython

WinPython is a self-contained Python distribution for Windows 10 and 11. Each build is a self-extracting 7-Zip archive that unpacks to a folder on a disk, network share or USB key; nothing is installed or written to the registry, and several versions can sit side by side.

The slim builds include Spyder, JupyterLab, the Qt stack and data and AI libraries, while the dot builds are bare Python. Free-threaded builds are also offered, and each release publishes a pylock file so the same package set can be rebuilt elsewhere.

Strengths

Fully portable, no installer or registry changes
Ships Spyder, JupyterLab and the scientific stack ready to use
Reproducible package sets through published pylock files
Bare and free-threaded builds alongside the full one

Limitations

Windows only, 64-bit only
Full builds are large, around 670 MB
Free-threaded builds lack the Qt stack and some binary packages

Details

Pricing: FreeFree and open source under the MIT licence.
License: MIT
Developer: The WinPython contributors
Platforms: Windows
How it runs: Downloadable app
Account: Not required
Works offline: Yes
Best suited for: Scientists, students and teachers who need a complete Python setup on Windows without admin rights
Categories: Developer tools
Last verified: October 2, 2026
Added: October 2, 2026
Sources: winpython.github.io

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