Business Tools

• minutes.io
  Take notes and share them right away
  

HTML

• 20 Snippets You should be using from Html5 Boilerplate
  packed full of fantastic snippets of code that are still very much worth using even if you don’t want to start using html5 boilerplate as your base template
  
• Can I use…
  Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.
• Mozilla Developer Network
• WebPlatform.org

JavaScript Optimization

• Google Closure Compiler

JavaScript Tools

• jsFiddle
  is an online editor and more for snippets build from HTML, CSS and JavaScript

jQuery

• jQAPI
  Alternative jQuery Documentation
• jQuery Lint
  works over the top of jQuery and diligently reports errors and any incorrect usage of jQuery

Photoshop Tutorials

• 22 Professional Photoshop Image Enhancing Tutorials

Testing

• BrowserStack
  live, web-based browser testing

Wallpaper

• wallhaven