What Operating Systems have you used? (not just windows)

Doubt I can remember them all, but I'll do my best.

IBM VM
IBM MVS
IBM AS400
DOS 1.1 thru DOS 7.01
CPM/86
Amiga OS
Windows 1.0 thru Win 8 including Server versions
Windows NT (several releases client & server)
Windows CE
IBM OS/2 1.0 thru Warp 4.0
SCO Unix
Sun Solaris
AIX
Puppy Linux
Ubuntu
Debian Linux
Red Hat Linux
Mint Linux
Fedora Linux
Android OS (Froyo thru Ice Cream Sandwich)
Mac OS
Mac OS X Leopard, Snow Leopard
iOS
ReactOS

I'm sure there are others. That's what happens when you have worked in the Tech field for 40 years!

Lots, here are some of them.

Windows

• Windows 95
• Windows 98
• Windows XP (one of my favourites)
• Windows Vista (dislike)
• Windows 7 (one of my favourites)
• Windows 8

Linux distributions

• Ubuntu (gnome, unity UI) (like)
• Lubuntu LVM (like)
• Linux Mint (like)
• Jolicloud (one of my favourites)

Windows 98
Windows XP
Mac OS 9
Mac OS X (Cheetah - Leopard)
iOS
Vista
Windows 7 (current favorite)
Linux (Ubuntu, Kubuntu, Xubuntu (current favorite), Mint, Fedora)

XP
Vista
Seven
Eight
Mac Snow Leopard
Ubuntu

Windows 98
Windows XP
Windows Vista
Windows 7 (:))
Windows 8 (For few hours only)

Amiga OS 1.xx
Amiga OS 2.0
Amiga OS 3.1
Windows 3.1
Windows NT 3.51
Windows 95
Windows NT 4
Windows 98
Windows 2000
Windows ME
Windows XP
Windows Vista
Windows 7
Windows 8
OSX Snow Leopard
Ubuntu
Knoppix
iOS
Atari's OS on the 512ST
Archimedes OS
Whatever OS was on the Sinclair and Spectrum computers back in the day.

Windows XP
Windows Vista
Windows 7
Windows 8
OSX snow leopard
OSX Mountain Lion
ubuntu
Linux puppy
Linux ZorinOs
Linux Mint
Kubuntu
Xbuntu