Scipy

Python library for audio and music analysis

Stats, linear algebra and einops for xarray

Minimalist Data Wrangling with Python (Open-Access Textbook)

Scikit-Criteria is a collection of Multiple-criteria decision analysis (MCDA) methods integrated into scientific python stack. Is Open source and commercially usable.

Open-source Platform for Scientific and Technical Data Processing and Visualization

Typing Stubs for SciPy