Open-source native macOS HTTP debugging proxy — intercept HTTPS, inspect APIs, mock responses, debug WebSocket & GraphQL. Community-driven. For developers, by developers.

Charles Proxy MCP server for AI agents with live capture, structured traffic analysis, and agent-friendly tool contracts

Inspect, mock and reshape HTTP/S traffic on macOS. Free, public-domain, native — the modern Proxyman alternative, built on mitmproxy.

Modern, cross-platform netcat alternative written in Go with enhanced features for network communication, debugging, and security testing.

Fatbeans.MCP.Client 是独立的控制台客户端，用于从命令行、脚本、外部进程或 AI Agent 调用Fatbeans Creater提供的MCP工具服务。

通信调试，TCP调试，串口调试，通信协议调试，设备通信仿真

CLI utility to check DNS propagation using multiple DNS servers

MQTT connectivity lab: throttle, flake, and observe client resilience.

How to set up proxy on Android via Wi-Fi, APN, ADB system-wide, and app-level OkHttp. Working HTTP and SOCKS5 code samples for Android proxy server setup, tested on Android 12 through 15.

curldbg is an HTTP request debugger written in C.

Diagnostic toolkit for network egress issues — detect proxy misconfigurations, DNS leaks, and connectivity problems

Awesome Network Debugging

A bridge that connects VPP (Vector Packet Processing) interfaces with Wireshark, enabling real-time packet capture and analysis. Supports remote monitoring via UDP and Unix sockets with a Wireshark extcap interface.

Surge is a powerful and flexible network management tool designed to optimize, monitor, and debug your internet connections.

GhostWall · 鬼打墙 — 侦测终端里的幽灵端口。零依赖 Python TUI 工具，一键找出环境变量中指向已死端口的代理配置。

Lua NATS dissector for Wireshark with JetStream parsing and rich traffic insights.

A lightweight CLI HTTP debugging proxy written in Go, designed for developers to inspect, filter, and log HTTP/HTTPS traffic directly from the terminal.

Modern Swift network-debugging library — a SwiftUI rewrite of Wormholy with Swift 6 strict concurrency, actors, and URLSession delegate proxying.

I built this script to debug network issues fast in my homelab, where old laptops with flaky NICs and loose wires always mess things up. It checks interfaces, DNS, firewalls, SSH, and more, with clean output and offline support. Saves me from console logins so I can focus on my projects.