Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Notix.co - NOTIX is an audience re-engagement service based on web and in-app push notifications that work for both desktop and mobile devices.
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
AnyPresence - AnyPresence is an Enterprise Backend as a Service for mobile app development and API augmentation.
Appcelerator - Native apps, Mobile APIs, Real-time analytics, One Platform.
AWS Mobile Services - Storage, Analytics, Push Notif. & SMS Delivery SDKs