Mozilla has released in the nightly builds an IDE for creating, editing, running and debugging web applications on Firefox OS devices and simulators, planning to extend it to all major browsers on mobile devices.
Cordova/PhoneGap 3.5.0 no longer support iOS 5, 3.6.0+ will not support WP 7, and future updates will come through npm.
This article includes several guidelines for creating websites that scale for different screen sizes and form factors.
The Status.IE project provides compatibility information for 4 major web browsers, allowing developers to see which features are available based on the browsers they need to support. Microsoft has open-sourced both the code serving the project and the data it offers, making it easy for developers to further their own development projects.
Google has released version 1.4 of its web programming language Dart. The release brings with it Observatory; a new tool for performance analysis, and a new experimental feature for dart:io, ServerSocket references.
Mitchell Baker has announced this week that Mozilla is adding Encrypted Media Extensions (EME) to Firefox, joining the ranks of Microsoft, Google, and Apple who have implemented the system in their browsers. The Free Software Foundation has condemned the partnership between Mozilla and Adobe, describing Adobe as being "hostile to the free software movement and to Mozilla's own fundamental ideals."
GitHub has open sourced their Atom IDE including the Atom Shell framework, Atom Core, and the Atom Package Manager (apm).
The Espresso Logic team has released a new product “Live Browser”, providing an instant HTML5 user interface for navigating databases in a master/detail format. Live Browser promises users the ability to explore, interact with and modify data from any enterprise databases, without any programming.
Mozilla and Unity recently announced they have joined forces to bring Unity's popular game engine to the web using WebGL standard and Mozilla’s asm.js.
Meteor has released version 0.8, bringing an “an overhaul of Meteor's rendering system.” Meteor’s next generation live templating engine, Blaze, includes support for fine-grained DOM updates, jQuery integration and simpler API. Blaze replaces the live page update engine Spark that was introduced in version 0.4 in 2012.
The recently released IDC study, The Evolving State of HTML5 by Al Hilwa, Research Director for Application Development, attempts to evaluate the advances made so far, the current state and takes a look at the future of HTML5 as a unifying web platform.
Enhancements in Orion 5 include: syntax highlighting for several languages, content assist for several Node.js libraries and databases, better syntax validation, cloud deployment and others.
Taking a detour from their original pure-HTML5 approach to mobile development, Mozilla has been working on adding support for Firefox OS to Cordova, which has happened with the latest Cordova 3.4.0.