WebStorm is a lightweight yet powerful JavaScript IDE, perfectly equipped for client-side development and server-side development with Node.js. Developed by JetBrains
License: Commercial
WebStorm is a comprehensive IDE primarily focused on JavaScript and web development, offering advanced features like debugging, version control, and code analysis. TweakStyle, on the other hand, is more lightweight and tailored for mobile development with a user-friendly interface but lacks the extensive capabilities of WebStorm.