Windows Longhorn (2001) 355 Windows

Windows Longhorn was the pre-release codename for Windows Vista and was the successor to Windows XP and Windows Server 2003 (built from NT 5.2 codebase). Development on the OS started in May 2001 and went through two unique development cycles separated by a development reset in 2004. The reset occurred as Microsoft's development staff had lost focus on the project as a whole and what was required to be done in order to bring it to market. Features were being written into the OS at an alarming rate with a significant lack of QA or vision of true requirement. This combined with Microsoft's trustworthy computing initiatives caused the reset.

• Pre-Reset
• Post-Reset

Windows ME (2000) 328 Windows

Windows Millennium Edition (internally Windows 4.90) was the last in the line of DOS-based Windows products. Like Windows 95 and Windows 98 it used the same hybrid 16/32 bit kernel that ran on top of a bundled version of DOS (MS-DOS 8.0). | 1.0 | 2.x | 3.x | NT 3.x | 95 | NT 4.0 | 98 | 2000 | ME | All |

• Beta
• Final

Windows Media Center (2004) 46 Video Audio Media Player Windows

Windows Media Center was a full-screen media player and video recorder designed for use on home theater PCs. It competed against digital recording devices like the Tivo.

• 6.1 (7)
• 2005 (XP)

Windows Media Player (1998) 8 Video Audio Media Player Windows

The media player built-into Windows

• 5.2
• 11

Windows Nashville (1995) 9 Windows

Windows Nashville is a cancelled Windows 9x release scheduled between Windows 95 and 98. It is also known as Windows 96.

• Build 999

Windows Neptune (1999) 15 Windows

Windows Neptune was a canceled version of Windows 2000 oriented towards the home market. It had featured elements brought over from Windows ME as well as new concepts such as activity centers. No final release of Neptune shipped and most work was rolled into Whistler

• Build 5111

Windows NT 3.x (1991) 196 Windows

Windows NT 3.1 was the first of the Windows NT series. Sporting the same face as its consumer counterpart Windows 3.1, it was completely different under the hood. A true 32-bit native operating system, Windows NT descended from the work Microsoft did while collaborating with IBM on OS/2 after the great split, and bringing in former DEC employees like Dave Cutler, bringing a VMS influence into the system. It was followed up by Windows NT 4.0. | 1.0 | 2.x | 3.x | NT 3.x | 95 | NT 4.0 | 98 | 2000 | ME | All |

• NT 3.1 Pre-Release
• 3.1
• 3.5
• 3.51
• Patches

Windows NT 4.0 (1995) 381 Windows

Windows NT 4.0 is the successor to the Windows NT 3.x release. In this release, the user interface from Windows 95 was integrated, making NT just as easy to use as its consumer counterpart. Internet Explorer was bundled, providing a web browser out of the box. Speed was improved by moving components into kernel-mode, at the expense of security and reliability - changes Windows is suffering from today, and is being reverted. NT 4 was followed up by Windows 2000. | 1.0 | 2.x | 3.x | NT 3.x | 95 | NT 4.0 | 98 | 2000 | ME | All |

• Cairo/Hydra
• 4.0
• Patches

Windows Personal Librarian (1988) 0 Reference Database Windows

Windows Personal Librarian is a CD database application for Microsoft Windows 2. It installs fine in a VM, but seems to need some additional configuration after that, but there are no instructions. This is likely a "client" tool meant only to display databases created elsewhere.

• 1

Windows Resource Kit (1991) 16 Utility Windows

The Microsoft Windows Resource kit is a set of supplementary tools for managing and deploying Microsoft Windows. The first Windows Resource kit was released in 1991 for Windows 3.0. Most, but not all, Windows versions after that had corresponding Resource Kits. These were often freely downloadable from Microsoft.

• 3.x
• 95
• NT 4.0
• 98
• 2000

Windows SDK & DDK (1986) 38 Windows

The Microsoft Windows Software Development Kits (SDK) provide sample program code, extra libraries, and documentation to aid application developers producing Windows applications. Microsoft Windows Driver Development Kits are similar sets of samples and libraries but specific to device driver development, and much more in-depth.

• Windows 1.x
• Windows 3.0
• NT 3.x
• Windows 3.1
• WfW 3.11
• Windows 95
• NT 4.0
• XP (NT 5.1)
• 2003 (NT 5.2)

Windows Starts Here (1995) 1 Windows

Windows Starts Here is a Windows tutorial from Microsoft Press that shows you how to put Microsoft Windows to work for you.

• 95
• 98

Windows Whistler (1999) 157 Windows

Windows Whistler was the pre-release codename for Windows XP, or NT 5.1. It is the successor to Windows 2000. XP was the first that did not compete against a DOS based version of Windows, effectively finally unifying the Windows line in to a single pure 32-bit product. Below are various Beta releases. Winworld does not host the final RTM versions.

• Early Whistler
• Beta 1
• Beta 2
• RC 1
• RC 2
• Final

Xerox Rooms for Windows (1991) 0 Utility Windows

Xerox Rooms for Windows is a desktop enhancement for Windows 3.0 and 3.1 that gives them multiple desktops. It features customizable desktop icon "buttons" in each "room" that may represent applications or documents, "doors" that lead to different rooms, separate backgrounds in each room, and a room overview. It can be launched manually, or when Windows starts.

• 1.0

Xmas for Windows (1994) 5 Novelty Windows

What better way to celebrate the winter solstice than to give someone the gift of an ugly Windows 3.1 color scheme, annoying backgrounds, and looping MIDI music that will make you want to rip your ears off of your head? Xmas for Windows, from Sygenex, gives you all of that as well as themed system icons, a screen saver, and several themed games. it does contain the usual religious based Xmas musics and some graphics.

• 3.0
• 8.0