The Portable Operating System Interface (POSIX) standardization effort used to be run by the POSIX standards committee. During a major overhaul of the names and numbers used to refer to this project, PASC (Portable Applications Standards Committee) came into being. So now the POSIX standards are written and maintained by PASC, just so that you know.

The ability to check POSIX API calls (those that have reached the status of IEEE or ISO standards) comes as standard with OSPC.

Useful POSIX related Web sites: