When Microsoft introduced Internet Explorer (IE) 9, one of the key new components of that browser was
its JavaScript engine, codenamed “Chakra.”
Chakra is still alive and well in IE10, and will be part of the one HTML5 browsing engine that will power both the Metro-Style and Desktop in Windows 8 and Windows RT. (It also will power the version of IE10 that is coming for Windows 7, as far as I know. There have been
no publicly-released test builds from the Softies of IE10 for Windows 7 since Platform Preview 2 a year ago, but supposedly this product is still coming.)
