Finally Apple did great thing for modern developers. Swift is a multi-paradigm, compiled programming language created by Apple Inc. for iOS, OS X, and watchOS development.
To get started with Swift as an open source project, Apple has launched a dedicated website for open source Swift swift.org. Developers can find everything they need to get started with Swift for their own projects, like technical documentation and links to the source code.
Apple saying, For students learning Swift has been a great introduction to modern programming concepts and best practices.
Swift has been released under the Apache 2.0 license, Developers can use for even in commercial products. It supports iOS, OS X and Linux.
shanidkv
December 10, 2015