GNU has part(s) Hurd
With kernels maintained by GNU and FSF
GNU Hurd
The original kernel of GNU Project is the GNU Hurd microkernel, which was the original focus of the Free Software Foundation (FSF).With the April 30, 2015 release of the Debian GNU/Hurd 2015 distro, GNU now provides all required components to assemble an operating system that users can install and use on a computer.However, the Hurd kernel is not yet considered production-ready but rather a base for further development and non-critical application usage.
contains comprises includes consists of has components