Third-party software

Three.js 0.180.0 (MIT): https://github.com/mrdoob/three.js
fflate 0.8.3 (MIT): https://github.com/101arrowz/fflate
fast-xml-parser (MIT): https://github.com/NaturalIntelligence/fast-xml-parser

occt-import-js 0.0.23 and OpenCascade are distributed as unmodified, separately loaded JavaScript/WebAssembly libraries under LGPL 2.1. See /assets/vendor/license.occt-import-js.txt and /assets/vendor/license.occt.txt.
Upstream source and build instructions: https://github.com/kovacsv/occt-import-js/tree/0.0.23
You may modify or replace these libraries and debug those modifications under their licenses. The site terms do not restrict those rights.

Matching source archives provided with this release:
/licenses/occt-import-js-0.0.23-source.tar.gz
/licenses/occt-source.tar.gz
The OCCT source revision is d2abb6d844231cb8f29be6894440874a4700e4a5. Extract it as the occt directory inside the occt-import-js source tree, then follow the included README and tools build scripts.

Additional v3 libraries:
AssimpJS 0.0.10 and Assimp (MIT / BSD-3-Clause): see assimpjs.txt and assimp.txt.
https://github.com/kovacsv/assimpjs
@imagemagick/magick-wasm 0.0.43: see magick-wasm.txt and magick-notice.txt for the library and bundled dependencies.
https://github.com/dlemstra/magick-wasm

Translation build attribution: /licenses/translation-notice.txt