Internet Explorer 4 was released to the public in September, 1997 and deepened the level of integration between the web browser and the underlying operating system. The Internet Explorer 4.0 Platform Preview was released in April 1997, and Platform Preview 2.0 in July that year. However, archived versions of the software can be found on various websites. Internet Explorer 4 is no longer available for download from Microsoft. IE4 market share dropped under 1% by 2004. In August 2001 when Internet Explorer 6 was released, IE4.x had dropped to 7% market share and IE5 had increased to 80%.

It attained just over 60% market share by March 1999 when IE5 was released. It was the default browser in Windows 95 OSR 2.5 and Windows 98 First Edition (later default was Internet Explorer 5), and can replace previous versions of Internet Explorer on Windows 3.1x, Windows NT 3.51, Windows 95 and Windows NT 4.0 in addition the Internet Explorer layout engine MSHTML (Trident) was introduced. It was superseded by Microsoft Internet Explorer 5 in March 1999. Its distribution methods and Windows integration were involved in the United States v. It was one of the main participants of the first browser war. Microsoft Internet Explorer 4 ( IE4) is the fourth, and by now, discontinued, version of the Internet Explorer graphical web browser that Microsoft unveiled in Spring of 1997, and released in September 1997, primarily for Microsoft Windows, but also with versions available for the classic Mac OS, Solaris, and HP-UX and marketed as 'The Web the Way You Want It'. Windows 95 OSR 2.5 and Windows 98 First Edition

X86, 68k (Up to 4.5), PPC, Alpha AXP, PA-RISC, and SPARC

Mac internet explorer emulator