Chess Garage includes the following software and fonts by others, under their own licenses.
The analysis engine is Stockfish 19, as built for the web by Stockfish.js 19.0.0 (WebAssembly): the lite build (multi-threaded and single-threaded) by default, and the full build (multi-threaded) when chosen. Stockfish and Stockfish.js are free software: you can redistribute and modify them under the terms of the GNU General Public License, version 3. They come with no warranty. Chess Garage runs them unmodified, only as a separate Web Worker; they are not part of Chess Garage's own code.
Literata, Instrument Sans and Noto Sans Symbols 2 are licensed under the SIL Open Font License 1.1: Literata, Instrument Sans, Noto Sans Symbols 2.