Darwin-xnu: The Darwin Kernel
With a blog for Machine Learning where Apple shares some of its practices and now open-sourcing its iOS kernel for the first time, Apple is entering a new era of Post-Jobs where every company has started to believe the only way to attract quality resources is to contribute back to the society - Remember how this community scared FB to rewrite React License. It's a great way forward for FOSS and hopefully one that can set up the right way for Post-Cook Apple.