1. Online Interpreters in JavaScript. Online coding and REPL. Run and share code.

  2. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

  3. Pastebin.com is a website where you can store text for a certain period of time.

  4. Plunker is an online community for creating, collaborating on and sharing your web development ideas.

  5. There are tons of online programming courses and tutorials, but it's never easy to find the best one. Try Hackr.io to find the best online courses submitted & voted by the programming community.

  6. HTML/CSS/JS and Markdown Code Playground For Web Designers and Developers

  7. Collaborative code editor with in-browser, real-time execution. Conduct programming phone screens like a boss.

  8. Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, Linux and z/OS.