Apache UserGrid - Usergrid is an open-source BaaS enabling developers to rapidly build web and/or mobile applications.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Baqend Platform - Baqend is a Backend-as-a-Service for web and mobile apps.
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
ApiOmat - ApiOmat is a Mobile Backend as a Service enabling organizations to integrate their enterprise IT systems with mobile devices and wearables.
AnyPresence - AnyPresence is an Enterprise Backend as a Service for mobile app development and API augmentation.