Desktop platforms like OS X, most Linux desktop environments, and newer versions of Windows have similarly allowed applications to hook into the OS' own notific

Desktop platforms like OS X, most Linux desktop environments, and newer versions of Windows have similarly allowed applications to hook into the OS' own notification mechanism for a while, but for some reason this model never caught on. One can argue that it's much clunkier on these platforms than on mobile, but the capability is now there. Unfortunately, with HTML5 notifications, the ship has probably sailed on this and it went from being an intriguing idea to a bad one, as now it's getting mainstream for individual websites to generate OS-level notifications. This made a previously privileged pool of messages full of untrusted content.