based on VS Code code
CodeSandbox: Online Code Editor with Bas Buursma and Ives van Hoorne - Software Engineering Daily
based on Elixir / Phoenix (Erlang engine), running from a single server on cloud!
CodeSandbox: Online Code Editor Tailored for Web Application Development
CompuIves/codesandbox-client: An online code editor tailored for web application development 🏖️