deepstreamHub

a lightning fast realtime data-store that connects browsers, smartphones, backends and the IoT - complete with realtime search, publish-subscribe and request-response

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.

Pusher

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

Quoter

Save time, eliminate mistakes, and get paid faster with Quoter, the cloud-based quoting platform.

Roost

Web Push has 30x better opt-in than email. Increase engagement with your audience using web push notifications

iZooto