Internet Explorer 11 is the eleventh and latest version of the popular Internet Explorer browser developed by Microsoft.It is included with the Windows 8.1 operating system by default , and is also available for Windows 7 SP1 users. An IE11 update was released for Windows 8.1 Update 1 , which includes features like Enterprise Mode. New features include improved support for touch, a Modern download manager, support for the WebGL Javascript API, and support for the SPDY protocol (version 3).