JavaScript IDE WebStorm - Version 4.0 The smartest CSS, HTML and JavaScript IDE for Web Development is at your fingertips. Navigate through files easily. Use relevant autocompletion for everything in your code. Get notified about code problems on the fly. Complicated language mixtures with HTML markup or SQL inside a JavaScript? Check how a modern IDE such as WebStorm handles this.- Smart DOM-based autocompletion- JavaScript 5 support, "use strict" mode- HTML5 Support- Zen Coding- LESS & SASS support- JavaScript Debugger- JavaScript libraries organizer for the smartest autocompletion- Extended JavaScript Frameworks support- Language Mixing- FTP and Remote Files Synchronization- Git & Mercurial support- Spell Checker- Node.JS support