• It's got the latest Web API's
  
• It's got sweet developer tools
  
• It's got a simulator!
  

• Console + Scratchpad
  
• DOM + CSS inspector
  
• A proper debugger
  
• Network traffic
  
• Performance profiler
  
• Responsive view

• It's a Firefox Extension
  
• Includes Web API's like Contacts, Device Storage, etc.
  
• Easy "push to device".
• Download
  

• Go to Tools/Web Developer/Firefox OS Simulator
  
• Click on Add Directory and select your app's manifest

• The quickest way to layout your app
  
• They're Gaia's UI widgets
  
• HTML + CSS code ready to copy & paste
  
• Download them at buildingfirefoxos.com
  

• They are not "standard" Firefox OS controls…
  
• …because such a thing does not exist!
  
• You are free to use them or not

• It's an app scaffolding tool
  
• Use it to generate your app's file structure
  

npm install -g yo
npm install -g grunt-cli
npm install -g generator-firefoxos
yo firefoxos 

• Can include Building Blocks
  
• Can include a basic app framework with
  Backbone + Zepto + RequireJS
  
• Support for Sass stylesheets
  
• Support for testing with Sinon + Chai + Mocha
  
• Grunt tasks to automate development
  

• It's a JavaScript task runner
  
• Use it to automate your development
  
• The Firefox OS generator for Yeoman comes
  with a handy Gruntfile ready to use

• Lint your code
  
• Run tests
  
• Launch a local server and
  re-compile Sass when a file changes
  
• Package your app in a zip
  
• Push your app to the device
  
• …and more