Best SocketCluster Alternatives & Competitors in 2025

Realtime application framework (Node.JS server)

Open Source

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.

Clear, Fast & Unlimited. Residential & Mobile Proxies For Best Price.

Try for free paid Free Trial $3.0 (3$ per 1 Gb)

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

Open Source

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

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

Simple pub/sub messaging for the web

Open Source

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

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

Open Source

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

Simple, secure & standards compliant web I/O for the most demanding of applications - uNetworking/uWebSockets

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

Open Source

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.

Open Source freemium $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )

The Autobahn project provides open-source implementations of the The WebSocket Protocol and The Web...

Open Source