In tune with Apple's move to release the Swift iOS an OS X authoring language to Open Source, IBM has revealed the Swift Sandbox, a clever interactive website that lets you write Swift code and execute it in a server environment – on top of Linux in a cloud infrastructure.
Each sandbox runs on IBM Cloud in a Docker container. In addition, both the latest versions of Swift and its standard library are available for coders to use. For more on IBM's work on Swift, head on over to their page.