List of operating systems:
- Apple Computer
- Commodore PET, Commodore 64, and Commodore VIC-20,
- The very first IBM-PC (3 OS offered to start, USCD Psystem, CPM-86, PC-DOS)
- Sinclair Micro and QX, etc
- TRS-DOS[?], ROM OS[?]'s (largely Microsoft BASIC implementations with file system extensions)
- TI99-4[?]
- Flex[?] (by Technical Systems Consultants for Motorola 6800 based microcomputers: SWTPC, Tano[?], Smoke Signal Broadcasting[?], Gimix[?], etc)
- mini-FLEX[?] (by TSC[?] for 5.25" disks on 6800 based machines)
Unix-like and other POSIX compliant systems
see also: