An intelligent popup blocker that can block annoying popup/under ads - Windows Shareware $19.95. Popup Purger is an intelligent popup blocker for Internet Explorer that can block annoying popup/under ads before they even open. It features a SmartBlock Engine, that blocks unsolicited popup ads but never interferes with your normal navigation - it automatically recognizes popup window that were intentionally triggered by you.

Popup Purger also comes with an option to keep your browser normalized, which will prevent pages from pulling stunts on you that open your browser in full-screen mode or without toolbar and navigation buttons. In addition to the popup/under blocking, the program can also block web page dialogs, hide or close all IE windows via Bosskey and exclude specified sites, using a White List.