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

  2. A JavaScript framework for creating ambitious web apps

  3. Radium is a music editor with a new type of interface.

  4. angular-gantt provides a gantt chart component to your AngularJS application.

  5. Tweak React components in real time. Contribute to gaearon/react-hot-loader development by creating an account on GitHub.

  6. Reactive Components for Modern Web Interfaces

  7. An enterprise-class UI design language and React implementation with a set of high-quality React components, one of best React UI library for enterprises

  8. Material Component Framework for VueJS 2

  9. Turn layers from Photoshop CC 2014 to code instantly.

  10. The missing CSS toolbox for Stylus

  11. An IDE tailor-made for web design and frontend development

  12. ColorZilla is an extension for Mozilla Firefox and the Mozilla Suite.