Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Flatfile - The new standard for data import
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
Backand - Backand is a backend-as-a-service for AngularJS that provides out-of-the-box social login, push notifications, Ionic integration and more.
RemoteStorage - An open protocol for per-user storage OWN YOUR DATA
DBngin - Free all-in-one database version management tool 🛠️