Why can't all apps be web apps?

Or can they? You might be surprised how much is possible to do on the Web Platform today. Would you like to live in a world where anyone can build and publish a real-time video editor, IDE or a game, all without leaving the browser? Let's explore new (or maybe slightly forgotten?) APIs, capabilities and features of the web. Let's learn to dance around and happily live together with the limitations of the browser.