Hitware Popup Killer Lite

Hitware Pop-up Killer Lite is a FREE pop-up and pop-under ad killer. Pop-up advertisements are not only annoying but steal your precious bandwidth, locking up your browser with a cascade of opening windows.
Hitware Lite is a discreet program that quietly runs from your system tray, eliminating all unwanted ads even before they appear. Unlike some other pop-up blockers Hitware Popup Killer Lite allows you to choose an audible or visual notification when a pop-up is blocked, allowing you to work uninterrupted.