Django Channels - <p>Nowadays, when every second large company has developed its own instant messenger, in the era of iMessages, Slack, Hipchat, Messager, Google Allo, Zulip and others, I will tell you how to keep up with the trend and write your own chat, using <cod…

simperium - Move data everywhere it's needed, instantly and automatically

Pushpin - Reverse proxy for realtime web services

GUN - Self-hosted Firebase.

Kafka - Apache Kafka is publish-subscribe messaging rethought as a distributed commit log.

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.