DISQUS

Jacek · 3 months ago

Some main unixes which are forgotten on the list:
- HPUX (10, 11)
- AIX

and VMWare wendor should not be forgotten as well:
- ESX

I use all of them and they rule Enterprise servers :)

Ravi · 3 months ago

I was aware of HPUX and AIX. I wonder how I missed out on those. ESX is a new one for me.

Jacek · 3 months ago

ESX is widely used for hosting VMWare machines. Once you attach NAS to is, you have perfect dev/testing env.

Cheers

Name · 3 months ago

VMS

jaybe · 3 months ago

- SGI IRIX
- Amiga OS
- DEC Ultrix
- Minix

Cecilieaux Bois de Murier · 3 months ago

You forgot CP/M.

Matt Simmons · 3 months ago

This is hard to do, just because it's hard to define what differentiates one OS from another, in many cases.

You've listed several BSDs, and also MacOSX, which is really based on BSD. Jacek listed ESX, which is really modified RedHat. Do CentOS and RHEL count as different? Or are we defining by kernel? In which case, the number of Windows OSes grows dramatically, while all the Linux based releases get lumped together. And we get herd. sort of. But then, a kernel doesn't make an OS, the kernel is the centerpiece that ties the OS together. In which case, most of Linux actually becomes Gnu.

And that's just the new stuff. Go back to the Old School, and you've got people re-writing Unix all the time. Remember... "Those who do not understand UNIX are doomed to recreate it...poorly".

Ravi · 3 months ago

You are right Matt. Each Windows version such as Win 98, WinXP and Vista can be considered to be separate OSes as they have major differences between them . If ESX is derived from RedHat and uses Linux kernel - as you say, then it should be clubbed with Linux. HP-UX and AIX being Unices themselves may have major differences between them as (I have heard) Unix land was fractured at one time with no application compatibility across different Unix OSes. Thus they can be considered as different OSes. Ditto for Mac OS X even though it is derived from Unix. I am guessing there are lots of other lesser known (perhaps custom) OSes out there which have a small yet solid user base. One another OS that comes to my mind is Symbian OS for data enabled mobile phones. Heh, but going into mobile phones will bring us to another conundrum as you have pointed out.

Mike H · 3 months ago

As someone pointed out earlier, good old VAX VMS !

john · 3 months ago

Risc? Amiga?

Cemil · 3 months ago

Amiga Unix... oh now there is some memories...

Really liking Ubuntu at the moment.

Michael de`Oz · 2 months ago

I have used OS:
1. IBM System/370
2. MS-DOS
3. MS-Windows 3.1 , 95, 98, etc
4. Linux (Red Hat)
5. SunOS, Solaris

FARIZLUQMAN · 2 months ago

How about Linux gOS??? Huhuhu...... a great os also, check it out in my blog linuxgos.blogspot.com...

Anthony · 1 month ago

And then there's all the OS for machines that are no longer with us any more:
MacOS ( 68K + PPC)
Apple DOS
Apple ProDOS
Tandy TRS-DOS
Atari OS
Commodore 64 OS
etc.

Some people even consider EMACS to be the OS - they're never in any other application. :-)