Firebase in a weekend
https://classroom.udacity.com/courses/ud0352
https://github.com/firebase/friendlychat-web
The finished app looks like this. Download it and lets chat.
https://classroom.udacity.com/courses/ud0352
Alternatives
Facebook’s Parse (an extremely popular Backend-as-a-Service provider) announced they are shutting down, and the news took the development community by storm.
http://parseplatform.org/
https://github.com/parse-community/parse-server/wiki
https://deepstream.io/
he open realtime server
a fast, secure and scalable realtime server
for mobile, web & iot
THE SIMPLEST WAY TO BUILD AN API.
An open source platform
Design, build, and scale APIs for web and mobile apps in minutes instead of days.
https://github.com/cloudboost/cloudboost
One Complete Serverless Platform for the next web. Add Storage, Real time, Search, Notifications, Auth and more with one simple API. https://www.cloudboost.io
Hoodie
The Offline First Javascript Backend
A fast, simple and self-hosted backend as a service for your (web) apps, Open Source and free. No need to write server-side code or database schemas. Makes building offline-capable software a breeze.
http://hood.ie/
http://docs.hood.ie/en/latest/guides/quickstart.html
https://www.meteor.com/tutorials
WhatsApp Clone with Meteor CLI and Ionic
https://github.com/Urigo/Ionic-MeteorCLI-WhatsApp
http://gun.js.org/#step1
http://hood.ie/
http://firehose.io/
http://remotestorage.io/
http://socky.org/
http://sockethub.org/
http://deployd.com/
http://github.com/Atmosphere
http://faye.jcoglan.com/
http://socket.io/
http://sockjs.org/
http://hook.io/