WebSocket is a computer communications protocol, providing full-duplex communication channels for interaction between a web browser (or other client application) and a web server over a single TCP connection. The WebSocket protocol allows for sending messages to a server and receiving event-driven responses without having to poll the server for a reply, facilitating real-time data transfer from and to the server. This is made possible by providing a standardized way for the server to send content to the client without being first requested by the client, and allowing messages to be passed back and forth while keeping the connection open. In this way, a two-way ongoing conversation can take place between the client and the server.

A fancy self-hosted monitoring tool

• UpdatedFeb 20, 2026
• JavaScript

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

• UpdatedFeb 20, 2026
• TypeScript

Realtime application framework (Node.JS server)

• UpdatedJan 23, 2026
• TypeScript

An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.

• UpdatedFeb 11, 2026
• Python

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features

• UpdatedFeb 20, 2026
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High performance, minimalist Go web framework

• UpdatedFeb 15, 2026
• Go

The fastest HTTP/2 Go Web Framework. New, modern and easy to learn. Fast development with Code you control. Unbeatable cost-performance ratio 🚀

• UpdatedJan 15, 2026
• Go

Package gorilla/websocket is a fast, well-tested and widely used WebSocket implementation for Go.

• UpdatedMar 19, 2025
• Go

Simple to use, blazing fast and thoroughly tested WebSocket client and server for Node.js

• UpdatedJan 9, 2026
• JavaScript

A fancy, easy-to-use and reactive self-hosted docker compose.yaml stack-oriented manager

• UpdatedJan 21, 2026
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Share your terminal as a web application

• UpdatedAug 1, 2024
• Go

🚀 Coroutine-based concurrency library for PHP

• UpdatedFeb 16, 2026
• C++

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

• UpdatedFeb 20, 2026
• TypeScript

WebRTC/RTSP/RTMP/HTTP/HLS/HTTP-FLV/WebSocket-FLV/HTTP-TS/HTTP-fMP4/WebSocket-TS/WebSocket-fMP4/GB28181/SRT/STUN/TURN server and client framework based on C++11

• UpdatedFeb 19, 2026
• C++

Deploy headless browsers in Docker. Run on our cloud or bring your own. Free for non-commercial uses.

• UpdatedFeb 20, 2026
• TypeScript

Embedded web server, with TCP/IP network stack, MQTT and Websocket

• UpdatedFeb 16, 2026
• C

An asynchronous event driven PHP socket framework. Supports HTTP, Websocket, SSL and other custom protocols.

• UpdatedFeb 13, 2026
• PHP

⚡ The one-liner node.js http-proxy middleware for connect, express, next.js and more

• UpdatedFeb 7, 2026
• TypeScript

Share your terminal over the web

• UpdatedJul 27, 2025
• C

Realtime application framework (client)

• UpdatedJul 9, 2024