If you visit my platforms page, you’ll see a large number of PC up to the old grand IBM 360 Mainframe that I have used and developed for. I believe this is the complete list of Operating Systems those platforms used.
Operating Systems
- Android
- Apple IOS (iPhone and iPad)
- Apple OS9
- Apple OSX
- DEC PDP
- DEC VAX/VMS
- GCOS
- GEM
- MPE
- MS WIndows – all flavors
- MS-DOS/DR-DOS
- UNIX – BSD, Debian, Ubuntu, Arch