Android's had this solved via intents for years now. Applications register to say "Hey, I want to handle this action". When the user initiates that action, if

Android's had this solved via intents for years now. Applications register to say "Hey, I want to handle this action". When the user initiates that action, if there are multiple apps that can handle it, the user is prompted to choose which app to use to handle it, with the option to remember the choice.