[pjmlp]

AIX and Solaris, Oxide uses Illumos, a Solaris fork.

Orbit OS on the PlayStation.

On embedded space, with various levels of POSIX compliancy without being Linux distributions, QNX, vxWorks, INTEGRITY, NuttX, FreeRTOS, Zephyr, RTEMS.

[jillyboel]

Thanks for proving my point