Top WEBSOCKET GitHub Repositories & Tools (2026)

A fancy self-hosted monitoring tool

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

Real-time intraday stock scanner for US equities with a browser dashboard you lay out yourself

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

The little ASGI framework that shines. 🌟

A proxy server for adding push to your API, used at the core of Fastly's Fanout service

Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.

High performance non-blocking webserver

WebSocket client for Python

C/C++ WebRTC network library featuring Data Channels, Media Transport, and WebSockets

:sparkles: Mojolicious - Perl real-time web framework

Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.

Open-source Back-end, self-hostable & ready to use - Real-time, storage, advanced search - Web, Apps, Mobile, IoT -

High performance Rust stream processing engine seamlessly integrates AI capabilities, providing powerful real-time data processing and intelligent analysis.

Nitrogen Web Framework for Erlang (now with websockets!)

Self-hosted Docker Compose management platform. For single or multi-host compose-first workflow.

JL is a program for looking up Japanese words and expressions.

High Performance reverse tunnel engine in Go, built for edge ⇄ origin server setups