Zero PopUp Killer XP will detect and close the annoying pop-up windows you sometimes encounter at certain Web service sites. It will automatically run when you open your browser, but you may also turn it on or off manually. Zero Popup Killer XP is a small, effective, and intelligent anti-pop-up software product that can kill annoying pop-up windows without human intervention by using artificial intelligence and intelligent agent technologies. It is light on your system's resources and resides in the system tray. It works as an add-in for Internet Explorer and automatically starts when you start up the IE browser.