Apple has published the source code for the low-level system components of the macOS 12.3 (Monterey) operating system that use free software, including Darwin components and other non-GUI components, programs, and libraries. A total of 177 source packages have been published.
Including the XNU kernel code is available, the source texts of which are published in the form of code slices associated with the next release of macOS. XNU is part of the open Darwin project and is a hybrid kernel that combines the Mach kernel, components from the FreeBSD project, and the IOKit C++ API for writing drivers.
A few days ago, public components used in the iOS 15.4 mobile platform were also published. The publication includes two packages - WebKit and libiconv.
Source: opennet.ru