Open source and free Texture Packer tool written in rust.
FastPack — modern texture atlas packer
Core algorithms and API for packing images into texture atlases (Skyline / MaxRects / Guillotine). Returns pages (RGBA) and metadata (JSON/Plist/templates).
The official Piston Window for the Piston game engine
A general purpose, deterministic bin packer designed to conform to any two or three dimensional use case.