| SCO product release dates |
| 198? | | Xenix | ?.? |
[Xenix for the IBM XT; before my time] |
| 1986 | | Xenix | 2.1.1 | [Xenix for the 80286] |
| 1987 | | Xenix | 2.1.3 | [Update "A" to the os] |
| 1988 | | Xenix | 2.2.1 | |
| | | Xenix | 2.2.3 | |
| 1989 | | Xenix | 2.3.1 | [last 16 bit release] |
| | | Xenix | 2.3.1 GT | [32 bit for 80386; SCSI support] |
| | | Unix 3.2.0 | | [No X, no TCP/IP] |
| | | Xenix | 2.3.2 | |
| 1990 | | Xenix | 2.3.3 | |
| | | Unix 3.2.0 | ODT 1.0 | [First ODT release with X and TCP/IP] |
| 1991 | | Xenix | 2.3.4 |
[the release that was never going to happen!] |
| | | Unix 3.2.1 | ODT 1.1 | [Ingress bundled] |
| 1992 | | Unix 3.2v2 | ODT 2.0 | Phoenix |
| 1994 | | Unix 3.2v4.0 | ODT 3.0 | Tbird |
| | | Unix 3.2v4.1 | ODT 3.0 | |
| 1995 | | Unix 3.2v4.2 | ODT 3.0 | OSR 3.0 | |
| 1996 | | Unix 3.2v5.0.0 | OSR 5.0.0 | Everest |
| 1997 | | Unix 3.2v5.0.2 | OSR5.0.2 | Comet |
| | | Unix 3.2v5.0.2 | OSR5.0.2 IFS | Internet Fast Start |
| 1998 | | Unix 3.2v5.0.4 | OSR5.0.4 | Capitola |
| | | Unixware 7 | UW 7.0 | Gemini |
| 1999 | | Unix 3.2v5.0.5 | OSR5.0.5 | Davenport |
| | | Unixware 7 | UW 7.1 | Gemini |
| 2000 | | Unix 3.2v5.0.6 | OSR5.0.6 | Freedom (Due Q2 2000) |