The unix is trademark for a powerful operating system.
Unix Operating Systems
Research Unix-like and other POSIX-compliant
Free/Open source Unix-like
Other
Hope It Helps!!
Research Unix-like and other POSIX-compliant
- Minix (study OS developed by Andrew S. Tanenbaum in the Netherlands)
- Plan 9 (distributed OS developed at Bell Labs, based on original Unix design principles yet functionally different and going much further)
- Inferno (distributed OS derived from Plan 9, originally from Bell Labs)
- Plan B (distributed OS derived from Plan 9 and Off++ microkernel)
- Solaris, contains original Unix (SVR4) code (code now open source via OpenSolaris project)
- Unix (OS developed at Bell Labs ca 1970 initially by Ken Thompson)
- Xinu, (Study OS developed by Douglas E. Comer in the USA)
Free/Open source Unix-like
- BSD (Berkeley Software Distribution, a variant of Unix for DEC VAX hardware)
- FreeBSD (one of the outgrowths of UC Regents' abandonment of CSRG's 'BSD Unix')
- DesktopBSD FreeBSD distribution for desktop use
- PC-BSD FreeBSD distribution for desktop use
- DragonFly BSD forked from FreeBSD
- NetBSD (one of the outgrowths of UC Regents' abandonment of CSRG's 'BSD Unix')
- OpenBSD forked from NetBSD
- FreeBSD (one of the outgrowths of UC Regents' abandonment of CSRG's 'BSD Unix')
- GNU
- Linux
- OpenDarwin
- OpenSolaris, contains original Unix (SVR4) code
- SSS-PC Developed at Tokyo University
- Syllable
- VSTa
- Jari OS, microkernel-based multi-server OS
Other
- TUNIS (University of Toronto)
Hope It Helps!!
I think there's four... AIX (IBM's), SCO, FreeBSD, and the HP one. HPUX? Can't' remember. AFAIK, linux is based on FreeBSD. I think OSX is too.
Main Entry: you·nix Pronunciation: \ˈyü-nək, -nik\Function: nounEtymology: Middle English eunuk, from Latin eunuchus, from Greek eunouchos, fromeunē bed + echein to have, have charge of — more at schemeDate: 15th century1 : a castrated man placed in charge of a harem or employed as a chamberlain in a palace2 : a man or boy deprived of the testes or external genitals3 : one that lacks virility or power <political eunuchs>— you·nix·ism \-nə-ˌki-zəm, -ni-\ noun