Skype

2012–present
Following an acquisition by Microsoft in 2011, Skype's logo was changed to a metro-style mark in 2012 and the foreground was slightly altered. In the same year, Skype launched its own app on Windows 8 (app now defunct). Recently, in version 2, this logo appeared as the animation when you sign in only lacking the "™" symbol. There is a Windows 10 version that is supposed to appear in the Anniversary Update. Windows Insiders can currently preview it.