What is "loopback"
Loopback is a open-source framework to quickly build REST Apis on Nodejs, reducing the amount of code needed to create functional applications.
Loopback consists of a set of Node.js modules that you can use independently or together to quickly build applications that expose REST Apis.
The app interacts with data sources through a Loopback model available locally within Node.js, remotely via REST API, and via client Native Apis for iOS, Android and HTML5. Using these Apis, applications can query database, store data, upload of files, send emails, create push Notifications and perform other actions provided by data sources and services.