> Half of the initial mac os x kernel was ripped off freebsd, giving pretty much nothing back. That is open source. https://github.com/apple-oss-distributions

> Half of the initial mac os x kernel was ripped off freebsd, giving pretty much nothing back. That is open source. https://github.com/apple-oss-distributions/distribution-macOS https://github.com/apple-oss-distributions/distribution-macO... https://en.wikipedia.org/wiki/Darwin_(operating_system) https://en.wikipedia.org/wiki/Darwin_(operating_system) https://en.wikipedia.org/wiki/XNU https://en.wikipedia.org/wiki/XNU