Additional
Information: All operating systems (OSs) in this category support POSIX standards fully or partly. POSIX is an acronym for: Portable Operating System Interface for UniX. Much like TRON, POSIX is not a
OS/C OS/C: Small Unix-like microkernel OS, process- and file-oriented, most of the system is built around the scheduler; designed to use minimum system resources to provide network services and utilities; written in C; source browsing and downloads available. [Open (POSIX) http://blake.prohosting.com/osc1/
Nova Nova: Effort to create a POSIX-like operating system atop the rtmk microkernel. [Open Source, GPL] (POSIX) http://www.freesoftware.fsf.org/nova/