3proxy - tiny free proxy server

tiny, portable SOCKS5 server with very moderate resource usage

Tun2Socks (Linux/Android/BSD/macOS/iOS/Windows) (IPv4/IPv6/TCP/UDP)

将 iptables/nftables 传入的透明代理流量转为 socks5 流量的实用工具

A socks5 server (Linux/Android/BSD/macOS/iOS/Windows)

QtNetwork Next Generation. A coroutine based network framework for Qt/C++, with more simpler API than boost::asio.

A multi-functional version of a popular network circumvention tool

sSocks fork for windows support; original: https://sourceforge.net/projects/ssocks/

Transparent proxy server and traffic wrapper

Redirect traffic to SOCKS5 server with iptables, epoll based, single threaded.

A lightweight proxy client written in C, intends to support multiple protocols(trojan etc.)

🌐 Light SOCKS5 proxy

🌐 SOCKS V5 server in C, based on epoll, single thread, supports TCP and UDP. C 语言实现的 SOCKS V5 代理服务器，基于 epoll，单线程，支持 TCP 和 UDP。

A simple, lightweight socks5 library (IPv4/IPv6/TCP/UDP/Client/Server)

UNIX Client-Server Program Interface

Cross-platform SOCKS5 proxy server program/library written in C that can also reverse itself over a firewall.

A light weight socks5 proxy server implemented in c using epoll and nonblocking socket.

Asynchronous proxy checker

vex - an asynchronous reverse connection helper for SOCKS4/5 proxies.

ENet reliable UDP networking library with SOCKS5 protocol support and others