SocketCluster Alternatives

Realtime application framework (Node.JS server)

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.

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

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

Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Simple pub/sub messaging for the web

Primus, the creator god of the transformers & an abstraction layer for real-time to prevent...

NATS Server is an open source messaging system for cloud native applications, IoT messaging, and microservices architectures.

Quickly and easily distribute your events between services. See a log stream and debug events before they even get to your services.

SockJS is a browser JavaScript library that provides a WebSocket-like object.

Lightstreamer is a server for delivering real-time messages to browser-based and mobile...

Serious realtime infrastructure

Blacklight is a free and open source ruby-on-rails based discovery interface (a.k.a.