Crazy Browser is a powerful Web browser. It has the ability to open multiple sites and windows inside a single browser task. It also has a Smart Popup Filter - it blocks all the annoying popups automatically!
Free Surfer mk II is a small and well functioning popup stopper with two surfing modes (natural, strict) that offer different levels of pop-up protection. The natural mode will close most common popups and not interfere with your browsing. The strict mode, as the name indicates is rather strict and will close any type of new browser window - it can only be bypassed by pressing a hotkey on the keyboard. Free Surfer offers full IE Integration, allowed sites list with customizable rules, a handy panic button (closes all browser windows with one click) and more.