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Independent WebSocket reference

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The independent, practitioner-built reference for WebSocket technology. Protocol internals, production patterns, scaling guides, and honest protocol comparisons with real code.

ws-monitor — websocket.org
ws://websocket.org/demo
uptime 00:00:00 RFC 6455
Latency
12ms
Messages
0 sent
0 recv
Frames
TEXT 0
BINARY 0
PING/PONG 0
Message Feed LIVE

Explore WebSockets

Understand the Protocol

From HTTP upgrade to binary frames — the complete picture.

Build Something

Hands-on guides from first connection to production scale.

Compare Protocols

Not everything needs a WebSocket. Pick the right tool.

By Language

Production-ready patterns for your stack.

Use Cases

Real-world patterns for common WebSocket applications.

Explore the full guide library — implementation patterns, framework integrations, and more.

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Try It

WebSocket Echo Server

Test WebSocket connections in real time. Send messages and see them echoed back instantly — no signup, no setup.

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WebSocket vs SSE vs HTTP

Answer a few questions about your use case and get a protocol recommendation.

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Why WebSockets?

HTTP

One request, one response. Connection closes. Every interaction has overhead.

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Server-Sent Events

Server streams to client only. Great for push — can't send back.

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WebSocket

Full-duplex, persistent. Both sides send whenever they want.

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What's New

New Guide

WebSockets and AI

Token streaming, tool-call interleaving, bidirectional agent communication. How modern AI systems use WebSockets — and when they don't.

Deploy and Operate

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