• JQuery API
• JQuery UI Plugins
• SitePoint Reference
• Cross Platform Browser Test
• JavaScript Kit
• Dynamic Drive DHTML Scripts
• jsFiddle-Playground for web developers
• JSHint - Online JS Code Erros detection

• Can I Use
• JSBin - Online Playground
• Field Guide to Web Applications
• JavaScript Playground - Tips, Tricks...
• HotScripts - Good
• ColorPicker.com
• CSS3 Gnerator
• The JavaScript Grid
• OverAPI Cheat Sheets

• 10 Node.js projects article:
• Express
• Hapi
• Electron
• Visual Studio Code
• JavaScript Standard Style
• Sinon.JS
• Mocha and Chai
• Hygen

Editores

• Sublime Text Completamente personalizable (mi favorito)
• Eclipse Full feature IDE
• SciTE Text editor
• XML Notepad
• HTML Kit
• Notepad++

Herramientas

• JRuler Cool ruler to measure pixels. Right click the ruler for more options
• File List Generator Creates list from folders
• Rename Rename file names.
• CSS3 Generator
• ESLint