Code playground is an online environment that allows you to write code, run it and share with others. You can also fork other people’s code and play around with it.
- CodePen - A social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn and debug, and find inspiration.
- CodeSandbox - An online code editor and prototyping tool that makes creating and sharing web apps faster.
- Glitch - Coding on Glitch is like working together in Google Docs–multiple people can work on the same project at the same time. There’s no setup, and you can see changes live on the web as you type.
- JSFiddle - An online IDE service and online community for testing and showcasing user-created and collaborational HTML, CSS and JavaScript code snippets, known as ‘fiddles’. It allows for simulated AJAX calls.
- Repl.it - A simple yet powerful online IDE, Editor, Compiler, Interpreter, and REPL. Code, compile, run, and host in 50+ programming languages of choice.