Then Windows 2000 Server edition, and revised to extend functionality and improve administration in Windows Server 2003.

Operating systems that supported Alpha included OpenVMS ( previously known as OpenVMS AXP ), Tru64 UNIX ( previously known as DEC OSF / 1 AXP and Digital UNIX ), Windows NT ( until 4. 0 SP6 and Windows 2000 RC1 ), GNU / Linux ( Debian GNU / Linux, Gentoo Linux and Red Hat Linux ), BSD UNIX ( NetBSD, OpenBSD and FreeBSD up to 6. x ), as well as the L4Ka :: Pistachio kernel.

A Microsoft Windows ( 2000 or newer ) port was made available starting with the 2. 2. 0 series.

In hindsight, Cairo was a much more difficult project than Microsoft had anticipated and, as a result, NT and Chicago would not be unified until Windows XP — albeit Windows 2000, oriented to business, had already unified most of the system ’ s bolts and gears, it was XP that was sold to home consumers like Windows 95 and came to be viewed as the final unified OS.

This problem plagued the NT line all the way through Windows 2000.

Microsoft released Windows 2000 in February 2000.

Windows 2000 is also the last NT-kernel Windows operating system to lack product activation.

While Windows 2000 upgrades were available for Windows 95 and Windows 98, it was not intended for home users.

Windows 2000 was available in six editions:

* Windows 2000 Professional

* Windows 2000 Server

* Windows 2000 Advanced Server

* Windows 2000 Datacenter Server

* Windows 2000 Advanced Server Limited Edition

* Windows 2000 Datacenter Server Limited Edition

In September 2000, Microsoft introduced Windows Me ( Millennium Edition ), which upgraded Windows 98 with enhanced multimedia and Internet features from Windows 2000.

EFI booting has been supported in only Microsoft Windows versions supporting GPT, the Linux kernel 2. 6. 1 and later, and Mac OS X on Intel-based Macs.

* Calypso, an email client for Microsoft Windows ; later called Courier

ClearType was later introduced as an operating system feature in Windows XP, where it was kept turned off by default.

In Microsoft Office 2007 and later versions, Internet Explorer 7 and later versions and Windows Live Messenger, ClearType is also turned on by default, even if it is not enabled throughout the operating system.

This version was the precursor to the multimedia features available in Windows 3. 1 and later, and was part of Microsoft's specification for the Multimedia PC.

In an attempt to resolve this tension, IBM and Microsoft agreed that IBM would develop OS / 2 2. 0, to replace OS / 2 1. 3 and Windows 3. 0, while Microsoft would develop a new operating system, OS / 2 3. 0, to later succeed OS / 2 2. 0.

Microsoft would later imitate much of it in Windows 95.

One major difference between Vista and earlier versions of Windows, Windows 95 and later, is that the original start button was replaced with just the Windows icon.

The Amstrad PCW's bundled word processing software, LocoScript, used the term " in limbo " to refer to files which had been deleted but which could still be restored, a concept similar to that later implemented by the Trash in the Apple Macintosh and the Recycle Bin in Microsoft Windows 95.

The icons of the operating system, which represented folders and application software were designed by Susan Kare, who later designed the icons for Microsoft Windows 3. 0.

Due to its usefulness, ping has been implemented on a large number of operating systems, initially BSD Unix, but later others including Windows and Mac OS X.

It was replaced by Microsoft Excel which followed some years later on both the Apple Macintosh ( 1985 ) and Microsoft Windows ( 1987 ).

Compatibility with Windows 3. 0 ( and later Windows 3. 1 ) was achieved by adapting Windows user-mode code components to run inside a virtual DOS machine.

As a result of the dispute, IBM signed the license agreement 15 minutes before Microsoft's Windows 95 launch event, which was later than their competitors and this badly hurt sales of IBM PCs.

It was initially marketed as a stand-alone add-on product and then later included it as a component in Windows Services for UNIX ( SFU ) and finally incorporated it as a component in Windows Vista and later Windows OS releases under the name " Subsystem for UNIX-based Applications " ( SUA ).

* Windows CE, a version of the Windows operating system designed for mobile devices

The software developer documentation for Windows CE states that ClearType for rotated screens is supported on that platform .< ref >

MIPS implementations are primarily used in embedded systems such as Windows CE devices, routers, residential gateways, and video game consoles such as the Sony PlayStation 2 and PlayStation Portable.

Operating systems ported to the architecture include SGI's IRIX, Microsoft's Windows NT ( until v4. 0 ), Windows CE, Linux, BSD, UNIX System V, SINIX, QNX, and MIPS Computer Systems ' own RISC / os.

Toshiba's R3900 was a virtually first SoC for the early handheld PCs that ran Windows CE.

* Microsoft ActiveSync, used by Windows XP and older Windows operating systems to synchronize with Windows Mobile, Pocket PC, and Windows CE PDAs, as well as PDAs running iOS, Palm OS, and Symbian

* Microsoft Windows Mobile ( Pocket PC ) with a Windows CE kernel.

* Windows CE, Mobile – Qt for Windows CE and Windows Mobile

* Windows CE

Other companies are choosing to use Windows CE.

The method is available as a computer program for Windows, Windows CE, Windows Mobile ( Pocket PC ), Palm OS ( PalmPilot ), etc.