Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
TapTalk.io - TapTalk.io is a complete in-app chat SDK and messaging API - Easy integration and customizeable.
built.io - Idea to app in record time
Lets Chat - Open source self-hosted chat app for small teams
Clear Impact Scorecard - Clear Impact Scorecard is a grant management and performance software solution.
MongooseIM platform - The massively-scalable XMPPJabber mobile messaging platform, for mobile and web, by Erlang Solutions