Internet Utility - Popup Blocker 

Tired of annoying unsolicited pop-up windows when surfing the web? Not only are pop-up ads annoying, but they steal bandwidth from your other legitimate downloads. Get this popular Popup Blocker and you won't need worry about popup window any more.
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Stop-the-Pop-Up 

Kill browser, Messenger Service, GAIN and SaveNow pop-ups automatically. The popup stopper has full support for both pop-ups and pop-under ads and will kill them even before they appear on the screen.
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BlockPop 

BlockPop works by integrating directly with Internet Explorer, to stop popups before the windows even become visible. This means: no flashing, and no wasted bandwidth waiting for ads to download.
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BestToolbars.net Pop Stop popup killer 

FREE pop-up killer blocks 100% pop-ups and pop-unders. Kills unwanted pop-ups but allows new window links that you click. Surfing will not be the same again. Eliminates popup or popunder without even opening it!
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AdBeGone 

Eliminates annoying pop-up advertising from opening up on your computer as you surf the Internet. It integrates directly into Internet Explorer, and works in the background... increasing your productivity, and easing your frustration.
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AAA KewlBar - Free Pop Up Blocker 

Pop Up Ad Window Killer Stopper for Internet Explorer, AOL, and Oultook Express
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