OS X 10.5 (Leopard) through OS X 10.10 (Yosemite) 1. Skype for Business (Mac): OS X 10.5 (Leopard) through OS X 10.10 (Yosemite) OS X 10.11 (El Capitan) and later.Skype for Business on Mac - available with Mac OS X El Capitan and macOS Sierra Lync for Mac 2011 - available with Mac OS X Yosemite Skype for Business mobile clients can be installed by visiting your App Store Note: Windows users, if you are running Office 2010 or earlier, you need to upgrade to Office 2013 to use Skype for Business.
