From Digital Codeworks:
Pathfinder is a Web browser based on Internet Explorers rendering engine. Along with a clean modern look and feel, Pathfinder combines fast accurate page rendering with one of the most effective pop-up blockers in the business. By building the blocking mechanism into the browser Pathfinder avoids all of the pitfalls of other pop-up blocking techniques. The pop-up blocker has the ability to recognize when you've clicked a link that should open a new window and allow it to open. No need to turn it off every time you follow such a link.