PushWizard - Push notification delivery and analytics platform.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
SashiDo.io - SashiDo is the Parse Alternative for busy people.
restdb.io - restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.
Pusher Beams - Send push notifications programmatically at scale
RemoteStorage - An open protocol for per-user storage OWN YOUR DATA