3proxy - tiny free proxy server

Secure Socket Funneling - Network tool and toolkit - TCP and UDP port forwarding, SOCKS proxy, remote shell, standalone and cross platform

Rapid SSH Proxy

Implementation of http, https, socks4/socks4a, socks5 server and client proxy protocols using modern c++ (使用しよう现代 c++ 实现 http、https、socks4/socks4a、socks5 服ふく务端和わ客きゃく户端完かん整せい的てき代理だいり协议。)

A small, ultrafast SOCKS proxy server.

Transparent proxy server and traffic wrapper

A Go library about socks5, supports all socks5 commands. That Provides server and client and easy to use. Compatible with socks4 and socks4a.

A cross-platform SOCKS5 library and server based on the microsocks project.

A socks5 proxy server with advanced remote monitoring capabilities

simple socks5 server

SOCKS5 and SOCKS4a proxy server

A Java SOCKS5 API and server that can use SSL/TLS for TCP traffic, can use DTLS for UDP traffic, and can perform SOCKS5 server chaining

gosocks is a golang based implementation of a socks5 server which supports custom handlers

SOCKS server bundled in an iPhone app.

Proxy Implementation in Java

Lightweight and fast SOCKS5 server

Flexible implementation of the SOCKS protocol

Go Binary Systemd-Integrated Proxy Server

A special SSH client that provides SOCKS5 proxy, written in Go.

A portable SOCKS-5 Server with IPv6 support