Services like Cloud Phone, ZipZap, and Line2 let you manage a second business line on the device you're already using.
Microsoft's Skype app has received a facelift that makes it look more like Windows Phone--which may or not be a good thing. The new app is available as a preview for Windows, and version 7.0 for the Mac.
Signal is compatible with RedPhone, its Android sibling, and scrambles voice calls placed via the iPhone.
In this week's Mac app roundup, you'll find a duck that likes to move your data around, a phone that doesn't need dusting, and a tower that knows what happened to all your files.
Microsoft's Skype team said the new iPhone app version, due in a week, will finally be on a par with its Android and iOS counterparts. In particular, the pesky offline messaging bugs will be solved, the team promises.
Talking to a bunch of your buds just got a whole lot less costly for Skype users.
While Google has its own stagnant Google Voice client for iOS, GV Mobile + is a far superior offering, and it's Macworld senior editor Dan Moren's Staff Pick this week.