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ie=internet explorer

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Windows Internet Explorer (formerly Microsoft Internet Explorer, abbreviated MSIE), commonly abbreviated to IE, is a series of proprietary graphical web browsers developed by Microsoft and included as part of the Microsoft Windows line of operating systems starting in 1995.

After the first release for Windows 95, additional versions of Internet Explorer were developed for other operating systems: Internet Explorer for Mac and Internet Explorer for UNIX (the latter for use through the X Window System on Solaris and HP-UX). Only the Windows version remains in active development; the Mac OS X version is no longer supported.

It has been the most widely used web browser since 1999, peaking at nearly 90% market share with IE6 in the early 2000s—corresponding to over 900 million users worldwide by 2006.[1][2]

Though released in 1995 as part of the initial OEM release of Windows 95, Internet Explorer was not included in the first retail, or shrink-wrap, release of Windows 95. The most recent release is version 7.0, which is available as a free update for Windows XP with Service Pack 2, and Windows Server 2003 with Service Pack 1, and is included with Windows Vista. Versions of Internet Explorer prior to 6.0 SP2 are also available as a separate download for versions of Windows prior to Windows XP. An embedded OEM version called Internet Explorer for Windows CE (IE CE) is also available for WinCE based platforms and is currently based on IE6. Another Windows CE/ Windows Mobile browser known as Internet Explorer Mobile is from a different codebase and should not be confused with desktop versions of the browser.


Internet Explorer began conceptually as one of the major components of the unreleased Windows 97, imagined as the successor to Windows 95. The project was started in the summer of 1994 by Thomas Reardon and subsequently led by Benjamin Slivka, leveraging source code from Spyglass, Inc. Mosaic, an early commercial web browser with formal ties to the pioneering NCSA Mosaic browser. In late 1994, Microsoft licensed Spyglass Mosaic for a quarterly fee plus a percentage of Microsoft's non-Windows revenues for the software. Although bearing a name similar to NCSA Mosaic, which was the first widely used web browser, Spyglass Mosaic was relatively unknown in its day and used the NCSA Mosaic source code only sparingly

Internet Explorer was not widely used until the release of version 3, which was the first version developed without Spyglass source code (although still using Spyglass "technology", so the Spyglass licensing information remained in the program's documentation). Internet Explorer 3 was the first major browser with CSS support. Released on August 13, 1996, it also introduced support for ActiveX controls, Java applets, inline multimedia, and the PICS system for content metadata. These were significant improvements compared to its main competitor at the time, Netscape Navigator. Version 3 also came bundled with Internet Mail and News, NetMeeting, and an early version of the Windows Address Book, and was itself included with Windows 95 OSR 2. Version 3 proved to be the first popular version of Internet Explorer, which brought with it increased scrutiny. In the months following its release, a number of security and privacy vulnerabilities were found by researchers and hackers.

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