Latest xcode and MAC OS X verison history
macOS 10.12
Xcode 8.2.1
Xcode 8.2
Xcode 8.1
OS X 10.11
Xcode 8.2.1
Xcode 8.2
Xcode 8.1
Xcode 8.0
Xcode 7.3.1
Xcode 7.2.1
OS X 10.11
Xcode 7.2.1
Xcode 7.0
Xcode 6.4
Xcode 6.3.1
Xcode 6.3
Xcode 6.2
Xcode 6.1.1
Xcode 6.1
OS X 10.9
Xcode 6.2
Xcode 5.1.1
Xcode 5.1
Xcode 5.0.2
Xcode 5.0.1