IEBlog : IE7 Tabbed Browsing Implementation Tony Schreiner, a developer on the IE Team has a post on the development of tabbed browsing that we will see in the IE7 beta. Tony says, “This core functionality is largely catch-up to other browsers which support tabs, but a necessary foundation for future work.” He goes on to discuss the implementation of the tabbed browsing within IE as well as compatibility issues to be explored. “One design decision worth calling out is that our current implementation is fully multithreaded. Each tab is on a separate thread, and the frame is also on its own thread. This has some impact on the overall footprint of IE, but we believe this will allow IE7 to feel faster and provide an overall better user experience.