XNU is described as 'hybrid kernel combining the Mach kernel with components from FreeBSD and C++' and is an app in the OS & Utilities category. There are four alternatives to XNU for Linux. The best alternative is Linux kernel, which is both free and Open Source. Other great apps like XNU are Linux-libre (Free, Open Source), GNU Hurd (Free, Open Source) and Redox (Free, Open Source).
- 4 alternatives