Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Zuznow - Automatic mobile adaptation platform for enterprise applications
CloudBoost.io - One Complete Database Service that does data-storage, search,real-time and a whole lot more.
AWS Mobile Services - Storage, Analytics, Push Notif. & SMS Delivery SDKs
Supabase - An open source Firebase alternative
Kumulos - Made for the business of mobile app development, Kumulos helps you manage the commercial and technical performance of Apps, so you drive a better outcome for your clients.