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SocketCluster

socketcluster.io

Free plan WebLinuxiOSAndroidAPISelf-hosted
Visit socketcluster.io
Spec score 7.7 #9 of 55 in WebSocket Tools

Spec sheet

Purpose
SocketCluster is an HTTP and WebSockets server environment for building scalable, multi-process real-time systems such as pub/sub and RPC applications.Read 8 Oct 2026 · socketcluster.io
Deployment
The CLI provides Kubernetes shortcut commands, and the maker provides Kubernetes deployment YAML files.Read 8 Oct 2026 · socketcluster.io
Integrations
The documentation describes running SocketCluster with frameworks such as Express and deploying it on Kubernetes inside Docker containers.Read 8 Oct 2026 · socketcluster.io
Support
The maker’s site links to community chat on Gitter and provides documentation and an API reference.Read 8 Oct 2026 · socketcluster.io
License
The SocketCluster repository states that the project is distributed under the MIT License.Read 8 Oct 2026 · github.com
Access control
Middleware streams can block connections and socket actions, and can delay or transform packets sent between client and server.Read 8 Oct 2026 · socketcluster.io
Authentication
JWT is the default authentication mechanism, with HTTP-based and WebSocket-based flows supported.Read 8 Oct 2026 · socketcluster.io
Channels
The maker says pub/sub channels are lightweight, automatically cleaned up when unused, and can support millions of unique channels.Read 8 Oct 2026 · socketcluster.io
Client libraries
The maker’s site lists JavaScript, Java/Android, Python, .NET, Go, Swift/iOS, Ruby, and Unity clients.Read 8 Oct 2026 · socketcluster.io
Message handling
Asynchronous operations in socket streams preserve message processing order, and the server exposes methods to monitor inbound and outbound backpressure.Read 8 Oct 2026 · socketcluster.io
Reconnect behavior
When a client loses its connection, its channels enter a pending state and automatically resubscribe after reconnection.Read 8 Oct 2026 · socketcluster.io
Requirements
The getting-started guide lists Node.js v10 as a requirement and Docker CLI and kubectl as optional dependencies.Read 8 Oct 2026 · socketcluster.io
Scaling
It is designed to scale vertically across processes and horizontally across machines or instances.Read 8 Oct 2026 · socketcluster.io
Use cases
The maker describes SocketCluster as suitable for chat systems and multiplayer online games.Read 8 Oct 2026 · socketcluster.io

Plans and prices

SocketCluster Free Open-source software; no paid plans are listed on the maker’s site. MIT licensed · self-hosted deployment Read 8 Oct 2026 · github.com

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