Computer companies (Operating Systems)
- Amiga
- Apple (OS X)
- AT&T (Plan 9)
- GNU (HURD)
- IBM (AIX, OS/2 Warp, OS/390, OS/400, TPF, VM/ESA, VSE/ESA)
- Microsoft (DOS, Windows)
- NeXT (OpenSTEP)
RIP or former contenders...
- Be (Be OS)
- Commodore International (Amiga OS)
- ESCOM International (Amiga OS)
- ESCOM Germany (Amiga OS)
- Gateway 2000 (Amiga OS)
- VIScorp (Amiga OS)
Graphics software developers
Resellers on the Internet
- MD+F
Products -
Indelible
Blue (OS/2)
- MD+F
Products - J3
Computer Technologies (OS/2)
- Kiyo Design (OS/2)
- Mensys (OS/2)
- Safe Harbor (Amiga, PC)