Block pop-up windows and browse multiple sites at once. Freeware.
Avant Browser - the top rated multi-window browser in Internet, which adds a batch of features and functionalities to Internet Explorer. Avant Browser is one the fastest web browsers on the planet.
Opera of Internet Explorer with versatile multi-window browser
This Version 10.1 build 23 includes bug fixes. It blocks pop-up windows and browses multiple sites at once.