| OS Version | |||||
|---|---|---|---|---|---|
| Version | Date | Extra Info | Products | Notes | Web Link |
| 2.00 | 01 Jan 1970 | NCOS 2.00 | |||
| 0.10 | 19 Sep 1996 | NCOS 0.10 | |||
| 1.15 | 20 May 1997 | NCOS 1.15 | |||
| 1.11 | 24 Feb 1998 | NCOS 1.11 | |||
| 0.01 | 18 Oct 1999 | NCOS 5.13 | RISC OS-NC 5.13 Laz1UK1309 | ||
| 0.02 | 08 May 2000 | RISC OS 4.00 (Pace 20000808 aUUP00-00) | |||
| 0.03 | 06 Oct 2000 | RISC OS 4.00 (Pace 20010402 Ursula0020) |