Windows 98• Code name : Memphis FEATURES ADDED :Internet/browsing capabilitiesSupport for state-of-the-art hardwareSupport for multigigabyte disk drivesTV viewer and broadcast abilityWizards

Microsoft officially ended support for Windows 98

on July 11, 2006..

Windows ME (Millennium Edition)

• Developed specifically for the home user FEATURES ADDED : Multimedia support (Media Player, movie

maker, image acquisition)Reliability features (system file protection,

auto-update function, system restore)Home network support

Windows NT (New Technology)

-Corporate, Networked environments

WORKSTATION

• for business users, who need faster performance

SERVER

• designed for business machines

Windows 2000 (W2K)

Final generation in the Windows NT

It knows who you are

Self-healing applications software

PROFESSIONAL SERVER-individuals and businesses of all sizes.

SERVER-small-to-medium size businesses.

ADVANCED SERVER-application server, including those involving large databases.

DATACENTER SERVER-applications requiring high-speed computation and large databases.

- Professional Edition

• Business users connected to corporate networks.

Home Edition

• Improved user interface• Improved multi-media support• More extensive personalization• Multiple user support• Internet support features

Media Center Edition Media Center Edition

• Play DVDs

• Receive and record

television programs

Windows CE (Consumer Electronics)

• Embedded system

• Internet connectivity

Supports Microsoft’s .NET platform for web services

Vista, (Longhorn), was released for businesses, the holders of

most volume licenses, on November 30, 2006.

-public download

Windows 7

• "Blackcomb" and "Vienna.“

• Faster boot times, new user interfaces

and the addition of Internet Explorer 8.

Mac OS

• User friendliness

• Easier to use than Windows

• Multimedia support and multitasking

U N I X

• YEW-nihks

• Multiuser time-sharing

• “UNIX graduate phenomenon”

• Character-based with a command-line user

interface

• First open or standard operating system

L I N U X

• LYNN-uks

• Open source software

• Dual boot

• Stable

• Quick answers to problems

• Reinstalling is much simpler

• Relative scarcity of applications