| Type |
Proprietary operating system provided by IBM |
Distributed operating system provided by Vita Nuova Holdings |
| Developer |
Developed by IBM |
Developed by the Computer Science Research Division at Bell Labs, now provided by Vita Nuova Holdings |
| Programming Languages |
Primarily developed in C |
Written in C and Limbo |
| Kernel Type |
Monolithic kernel |
Monolithic kernel |
| Target Systems |
IBM RS/6000 series, PowerPC-based systems, System-370 mainframes, PS-2 personal computers, Apple Network Server |
NAS (Network Attached Storage), servers, embedded systems |
| UNIX Certification |
Certified to UNIX 03 standard of The Open Group |
Not specifically mentioned, but it is not known to be UNIX-certified |
| Open Source |
No |
Yes |
| First Version Release |
1986 |
1997 |
