Pusher Beams - Send push notifications programmatically at scale
Parse - Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.
Magnify - Push out beautiful website announcements in 10 seconds.
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Push Notification Preview - A simple tool for previewing push notification copy
Azure Mobile Apps - Build engaging cross-platform and native apps for iOS, Android, Windows or Mac with Azure's Mobile App Service.