In a shift away from its prior policy of barring third-party web browsing applications on the basis that they duplicated existing functionality, Apple has allowed a small group of third-party browsing apps to appear in the App Store. Amongst the new apps are Edge Browser (Free), which clears up screen real estate by removing the address and navigation bars, Incognito ($2), which lets users browse without leaving a history of any kind, WebMate:Tabbed…