mpicpp (3454017) writes with word that Mozilla released a full development environment integrated into Firefox (available now in nightly builds). From the announcement: Developers tell us that they are not sure how to start app development on the Web, with so many different tools and templates that they need to download from a variety of different sources. We’re solving that problem with WebIDE, built directly into Firefox. Instead of starting from zero we provide you with a functioning blueprint app with the click of a button. You then have all the tools you need to start creating your own app based on a solid foundation. WebIDE helps you create, edit, and test a new Web application right from your browser. It lets you install and test apps on Firefox OS devices and simulators and integrates the Firefox Developer Tools for seamless debugging and inspection across those devices. This is a first step towards debugging across various platforms and devices over WiFi using open remote debugging APIs. The default editor is based on CodeMirror, but the protocol for interacting with the IDE is open and support for other editors (Emacs anyone?) should appear soon.