In Pictures: Top 10 productivity apps for Windows ...
Skype is one of the most popular VoIP applications available for Windows, or any other platform for that matter. The modern-UI version is optimized for touch input and works equally well, whether it's running full-screen or snapped to one side, while another app is running. In addition to making voice or video calls, Skype also offers instant messaging capabilities and gives users the ability to share photos or other file types (or virtually any size) with other Skype users.
In Pictures: Top 10 productivity apps for Windows RT