What are some alternatives?
When comparing World Happiness Map and emitter.io, you can also consider the following products
appenguin - Turn the most complex web application or website to into an Android app in minutes, for free!
PubNub - PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.
Microsoft OneDrive - Secure access, sharing & file storage
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
GroupDocs - GroupDocs is a web-based service for online document sharing, collaboration and management.
Rapid.io - Rapid.io is a cloud-hosted service that allows app developers to build realtime user interfaces...