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

  2. Simply better realtime.

  3. Say goodbye to spreadsheets with fully-automated quoting and easily track and manage your quotes...

  4. SignalR is a server-side software system designed for writing scalable Internet applications, notably web servers.

  5. 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.

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

  7. An open, scalable realtime engine for Node.js