Mozilla has announced the launch of the first milestone release for their Web Application project.
The project is the rival for Google’s Chrome Web Store and follows a more open philosophy by letting them to work on any device/browser + not pushing any limits for the distribution (can be any store or directly by the developer).
With the stable APIs, developer utilities and documentation provided, web apps are ready to be built using HTML5 + JavaScript.

Mozilla has created a gallery of user interface concepts to show how applications can enhance your web environment.
Website: http://apps.mozillalabs.com/gallery