[1] 時期の比較とかで発売日の情報は重要なんですが、検索してもなかなか出てきません...
| 製品 | 国・言語 | 発売日 | |
| OS/2 1.0 | ja-JP | 1988 | |
| 3.0 | en-US | 1990 | |
| 3.1 | en-US | 1992 | |
| 3.1 | ja-JP | 1993-05 | |
| NT 3.1 Server | US | 1993-07 | |
| DOS 6.x | 1994 | ||
| NT 3.5 Server | US | 1994-09 | |
| NT 3.51 Server | US | 1995-06 | |
| 95 β | |||
| 95 | US | 1995-08-15 | |
| 95 .JP | 1995-11-23 | ||
| NT 3.51 Server | JP | 1996-01 | |
| 95 OSR/SP 1 | JP | 1996 春 | |
| NT 4.0 Server | US | 1996-07 | |
| NT 4.0 Workstation | 1996-07-29 | ||
| 95 OSR 2 | JP | 1996 秋 | |
| IE 4.0 | JP | 1996-11 | |
| CE 1.0 | en-US | 1996-11 | |
| NT 4.0 Server | JP | 1996-12-10 | |
| 95 OSR 2.1 | JP | 1997 春 | |
| Memphis Developer Release (#1423) | US | 1997 春 | IE 4 Platform Preview (shell 統合なし) |
| CE 1.01 | ja-JP | 1997-06-25 | |
| Memphis (#1525) | en-US | 1997-06-30 | IE 4 統合 |
| NT 5.0 β1 | US | 1997-09-26 | |
| 98 β | en-US | 1997-07-27 | 初の 98 公開版 |
| 98 β2.1 (#1602) | JP | 1997 | |
| 98 β3 | US | 1998 | |
| 98 β3 (#1650) | JP | 1998-02-03 | (3日報道関係者, 5日一般) |
| NT 4.0 Server Option Pack | JP | 1998-03-19 | |
| 98 | JP | 1998-07-25 | |
| NT 5.0 β | en-US | 1998 | WinHEC |
| NT 5.0 β2 | en-US | 1998-08-18 | WinNT 5.0 Reviewer's Workshop |
| NT 4.0 Server, Terminal Server Ed. | JP | 1998-09-25 | |
| NT 4.0 SP 4 | US | 1998-11 | |
| NT 4.0 SP 4 | JP | 1998-12-15 | |
| 98 SE β(#2150) | US | 1999 | |
| 2000 β3 | en-US | 1999-04-28 | |
| 2k β3 | JP | 1999-07 | |
| 98 SE | JP | 1999-09-10 | |
| 2k RC2 | JP | 1999-12-01 | |
| 2k | 同時 | 2000-02-17 (US 時間) | |
| 2k Advanced Server | JP | 2000-02? | |
| Me | JP | 2000-09-22 | |
| XP RC | JP | 2001-08-10 | |
| XP | 欧米 | 2001-10-25 | |
| XP | JP | 2001-11-16 | |
| Server 2003 Volume License | 2003-06-02 | ||
| Server 2003 Package | 2003-06-25 |