Spherical Harmonics ROOM, an open-source Python library for room acoustics simulation using Ambisonics, https://arxiv.org/abs/2603.27342, installable via {pip install pyshroom}.
Stretched Equal Area (SEA) Generator - Make spherically symmetric arrangements of particles with accurate particle densities, e.g. for SPH initial conditions that precisely match an arbitrary density profile (Kegerreis et al. 2019, MNRAS 487:4, https://doi.org/10.1093/mnras/stz1606). See also https://github.com/srbonilla/WoMa for making the initial profiles, placing particles with SEAGen, and modifications for spinning planets!
Library for applications were information should be displayed on the surface of a sphere. It allows for creating spheres with nodes and edges that can be dragged on its surface.