PopSubtract is an intelligent pop-up blocker designed for ease of use, superior pop-up blocking, and quick downloading. It keeps both Internet browser pop-up and pop-under windows from appearing. With InterMute's SmartPop technology, necessary pop-up windows (secure log-in windows) open automatically when you click links. The newest feature stops Windows Messenger Service pop-up windows, which can appear even when users are not browsing the Web.

This version features minor improvements and bug fixes.