Appery.io provides the ability to use App Builder Extensions to extend the platform capability.
App Builder Extensions are separate external components that utilize the App Builder visual editor, REST APIs, and the Backend Services. Even though the extension is independent from the App Builder, it runs and works inside the App Builder. Being a separate component allows us to create new extensions, and update existing extensions easily (no need to restart the App Builder server). Today we provide one extension that allows you to generate a master-detail app in seconds. The extension is called App Creator Express.