Codio vs IBM Swift Sandbox: What are the differences?

Codio: An awesome Web IDE that runs right in your browser. Every project gets its own Box: an instantly available server-side development environment with full terminal access. With features such as forking, collaboration, importing from Git repos and more, Codio strives to remove as many barriers as possible to create a platform developers will enjoy using as their IDE of choice; IBM Swift Sandbox: Write & test Swift code in your browser. The IBM Swift Sandbox is an interactive website that lets you write Swift code and execute it in a server environment – on top of Linux! Each sandbox runs on IBM Cloud in a Docker container. Both the latest versions of Swift and its standard library are available for you to use.

Codio and IBM Swift Sandbox can be categorized as "Cloud IDE" tools.