Internet Explorer 8 is the first version of IE to pass the Acid2 test, and the last of the major browsers to do so (In the later Acid3 Test, it only scores 24/100.).
It was also made available for Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. It was released on March 19, 2009, and is the default browser for Windows 7 and Windows Server 2008 R2 operating systems. Windows Internet Explorer 8 ( IE8) is a graphical web browser by Microsoft, the eighth version of Internet Explorer and the successor to Internet Explorer 7.
