Rival Apple has its own video chat app -- FaceTime -- which it unveiled in 2010 and now bundles with OS X for Macs and iOS for iPhones and iPads. Apple, however, has never expanded FaceTime support beyond its own operating systems. Skype, on the other hand, runs on all supported versions of Windows -- including the 11-year-old XP -- as well as on Amazon's Kindle Fire, Android, iOS, Linux, OS X, Sony's PlayStation Vita, Symbian and Windows Phone.
Skype for "Metro" -- it runs on both Windows 8 and Windows RT -- shows recent calls and instant messages alongside the most-frequently-pinged contacts. (Image: Microsoft.)
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, on Google+ or subscribe to Gregg's RSS feed. His email address is firstname.lastname@example.org.
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