Windows isn't just about email anymore. In this week's All Things Appy, we take a look at the five best, must-have free apps for communicating in Windows 8 and taking advantage of the tile-based layout that's native to the ecosystem. Voxofon's Voice-over-Internet-Protocol app, for example, lets you text and call. It works by placing the call for you and then ringing your phone to complete the call.