Mozilla releases first stable version of Open Web Apps
Open Web Apps will be compatible with every platform and OS -- including Chrome! -- and they can be distributed in a variety of ways, too. Mozilla will undoubtedly run its own Web Store alongside AMO, but the Open Web App spec allows for developers to run their own store, or to simply distribute Web apps on their own, without the need for a store.
There's a video introducing Open Web Apps after the break.