Operating systems of the 1980s
Every operating system in the Atlas that first appeared in the 1980s — 20 entries.
| Name | Years | Status | Family | Creator / origin |
|---|---|---|---|---|
| Xenix | 1980– | Dead | Unix | Microsoft / SCO |
| Domain/OSApollo DOMAIN | 1981–1991 | Dead | Independent | Apollo Computer |
| MS-DOSPC DOS | 1981–2000 | Dead | DOS | Tim Paterson / Microsoft & IBM |
| QNX | 1982– | Alive | Independent | Dan Dodge & Gordon Bell / BlackBerry |
| SunOS | 1982– | Superseded | Unix | Sun Microsystems |
| HP-UX | 1983– | Maintenance | Unix | HP |
| ProDOS | 1983–1993 | Dead | Independent | Apple |
| AmigaOS | 1985– | Maintenance | Independent | Carl Sassenrath / Commodore |
| Atari TOS | 1985–1994 | Dead | DOS | Atari |
| Windows (classic)Windows 1.0–9x | 1985– | Superseded | Windows | Microsoft |
| AIX | 1986– | Alive | Unix | IBM |
| GEOS | 1986–1990 | Dead | Independent | Berkeley Softworks |
| MINIX | 1987– | Alive | Independent | Andrew Tanenbaum / VU Amsterdam |
| OS/2 | 1987– | Dead | OS/2 | IBM & Microsoft |
| RISC OS | 1987– | Maintenance | Independent | Acorn → RISC OS Open |
| A/UX | 1988–1995 | Dead | Unix | Apple |
| IBM iOS/400, i5/OS | 1988– | Alive | Independent | IBM |
| IRIX | 1988–2006 | Dead | Unix | SGI |
| NeXTSTEP | 1989– | Superseded | Unix | NeXT |
| SCO OpenServer | 1989– | Dead | Unix | SCO |