Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
MySQL - The world's most popular open source database
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Azure Mobile Apps - Build engaging cross-platform and native apps for iOS, Android, Windows or Mac with Azure's Mobile App Service.
SQLite - SQLite Home Page