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⚡ KCP - A Fast and Reliable ARQ Protocol

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

Nmap - the Network Mapper. Github mirror of official SVN repository.

Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. Nice GUI for lsof.

Testing TLS/SSL encryption anywhere on any port

An interesting open source chat application. Developed with node.js, mongoDB, socket.io and react

30天自制C++服务器，包含教程和源代码

High Performance TCP/UDP/HTTP Communication Component

High performance, simple, extensible golang open source network library

SuperSocket is a light weight, cross platform and extensible socket server application framework.

🚀 Realtime Monitoring solution for Node.js/Express.js apps, inspired by status.github.com, sponsored by https://dynobase.dev

A new, open source, extensible, platform-agnostic tool for remotely debugging and testing your JavaScript. Powered by node.js and socket.io

An blocking socket client for Android applications.

An efficient, extensible and easy-to-use RPC framework.

Open-Source Remote Administration Tool For Windows C# (RAT)

基于Netty+TCP+Protobuf实现的Android IM库，包含Protobuf序列化、TCP拆包与粘包、长连接握手认证、心跳机制、断线重连机制、消息重发机制、读写超时机制、离线消息、线程池等功能。

Common libraries and data structures for C.

T-io is a network programming framework developed based on Java AIO. From the collected cases, t-io is widely used for IoT, IM, and customer service, making it a top-notch network programming framework