The behave3d library is an open-source project with a MIT License. The project is hosted at GitHub -, and is also available as an NPM package -
Feel free to download, share, modify as you like or contribute to the development.

You can quickly download the latest version from here:

size: 173kB
(The package contains both the original and built+minified files)

Or get the npm package:

npm install behave3d