...Parse Server works with the Express web application framework. It can be added to existing web applications, or run by itself. Parse Server is continuously tested with the most recent releases of Node.js to ensure compatibility. We follow the Node.js Long Term Support plan and only test against versions that are officially supported and have not reached their end-of-life date. You can use any arbitrary string as your application id and master key. These will be used by your clients to authenticate with the Parse Server. Parse provides SDKs for all the major platforms.
Framework for real-time applications and REST APIs with JavaScript
...You can have multiple databases in a single app and swap them out painlessly due to a consistent query interface. Feathers can be used the same way on the server with Node.js and in the browser with frameworks like React, Angular, VueJS or on mobile with React.