| 1985 | 1.x |
| 1987 | 2.x |
| 1990 - 1992 | 3.0 |
| 1992 | 3.1 |
| 1993 | WinNT3.1 |
| 1993 | 3.11 |
| 1994 | WinNT3.5 |
| 1995 | 4.0 |
| 1995 | 3.2 (3.1) |
| 1995 - 1996 | WinNT3.51 |
| 1995 - 1998 | 4.1 |
| 1996 - 1999 | WinNT4.0 |
| 1999 | WinNT5.5 |
| 2000 - 2001 | WinNT5.0 |
| 2000 | 4.9 |
| 2001 - 2009 | WinNT5.1 |
| 2003 - 2007 | WinNT5.2 |
| 2007 - 2009 | WinNT6.0 |
| 2009 - 2011 | WinNT6.1 |
| 2010 - 2013 | WinCE 7.0 |
| 2012 - 2013 | WinNT6.2 |
| 2013 - 2014 | WinNT6.3 |
| 2015 - 2022 | WinNT10.0 (97xx-22000) |
| 2021 - 2024 | WinNT10.0 (22000+) |
The Collection Book