I’m proposing an API to allow web applications (as defined by the Web App Manifest standard) to set an application-wide badge, shown in an operating-system-specific place associated with the application (such as the shelf or home screen).
I’m on the Chrome team at Google, and looking for other browser vendors to work on the spec. We’re planning to start implementing a prototype in Chrome soon.
Feedback would be best delivered as issues on the GitHub repo. Thanks!