Open Web App Manifest

An Open Web App is Mozilla's answer to the proprietary app stores. It is a website that has an acompanying manifest file which accomplishes such things as granting the "app" permission to access things on the user's device (such as contact lists) if it is properly installed, and giving it an icon which can be placed on a system desktop. These apps are supported by the Firefox browser on various platforms including Android mobile devices.

Manifest files are in JSON format and given a .webapp extension. The MIME type of application/x-web-app-manifest+json is used (enforced by the Firefox Marketplace, though not by the browser itself).

Links and references

 * App manifest docs (Mozilla)
 * Firefox Marketplace