What do you use to build Open Web Apps? The answer is "anything you would normally use to build for the web." The following is a list of tools and resources to help you get started making Open Web Apps. They can be easily integrated into your existing web development workflow, if you have one, or you can build a new workflow around them.
To help you start writing web apps quickly, we provide a few templates which has a lot already set up. Each template is a static web project with tools to help build and deploy.
Is your app ready for the Firefox Marketplace? The App validator will check your manifest and show you any errors it may have, or warnings you should consider.
You have a Firefox OS app but you don't have a Firefox OS phone to test it on? The Firefox OS simulator will let you run your app in the browser, so you can test early and often.
Firefox now ships with a default set of developer tools built from the ground up to ensure a great development experience that is both snappy and efficient.