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

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• Updated Nov 9, 2026
• Swift

Native, local-first network intelligence for macOS—capture live traffic, inspect PCAP/PCAPNG files, and investigate sessions, protocols, processes, flows, and packet evidence.

macos swift pcap networking packet-analyser traffic-analysis network-monitoring pcapng libpcap network-visualization packet-sniffer network-analysis packet-capture packet-analyzer macos-app swiftui network-debugging wireshark-alternative sniffnet-alternative packet-peeper-alternative

• Updated Nov 12, 2026
• Swift

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

mcp openai developer-tools codex charles-proxy ai-agent network-debugging mcp-server

• Updated Jun 23, 2026
• Python

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

macos swift debugging proxy http-proxy mocking developer-tools mitmproxy swiftui http-debugging network-debugging web-debugging proxyman-alternative charles-alternative

• Updated Nov 2, 2026
• Swift

Cross-platform TCP/UDP/MQTT debug tool for packet send, socket testing & protocol debugging. 全平台 TCP/UDP/MQTT 网络调试工具。

mqtt iot gui embedded tcp cross-platform network udp stress-testing debug gpui network-debugging

• Updated Nov 11, 2026
• Rust

Protocol discovery and replay for line-based network traffic - capture proxy in Go, deterministic replay, diff and schema inference in Rust.

rust cli golang tcp-proxy trace-format replay schema-inference network-debugging protocol-discovery traffic-capture

• Updated Sep 6, 2026
• Rust

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。

mcp packet-capture named-pipe network-debugging mcp-clients mcp-cli network-debugging-windows-pc

• Updated May 5, 2026
• C#

Free, open-source HTTP, HTTPS and WebSocket debugging proxy for Windows and macOS. Rust core + Electron UI. Alternative to Charles, Proxyman and Fiddler.

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• Updated Nov 10, 2026
• JavaScript

Free, open-source Fiddler Classic alternative for Windows. Capture, inspect, filter, replay, compose and mock HTTP/HTTPS traffic with TLS decryption, HTTP/2, HTTP/3 and SAZ support.

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• Updated Nov 9, 2026
• C#

A lightweight, cross-platform TCP, UDP & WebSocket debugger built with Tauri, Rust and Vue. Test clients and servers with hex tools, auto-reply, DNS lookup and network diagnostics.

dns rust cross-platform websocket-server websocket-client tcp-server tcp-client hex-editor network-tools udp-client tauri vue3 network-debugging socket-debugger

• Updated Sep 6, 2026
• Rust

Run terminal commands through a proxy. Choose a country or city and route a shell session or a single command through a proxy. Your other apps and terminals keep their normal connection.

shell cli automation terminal proxy http-proxy developer-tools command-line-tool geo-testing network-debugging agent-skills claude-skills

• Updated Nov 10, 2026
• Go

In-app HTTP & GraphQL network inspector for iOS in 100% Swift (Chucker for iOS). Debug URLSession, Alamofire & Apollo traffic on-device with zero proxy setup.

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• Updated Oct 23, 2026
• Swift

A tiny Cloudflare Snippet that echoes your IP, geo, ASN, edge location, TLS, RTT, language, and user agent as JSON or plain text.

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• Updated Sep 9, 2026
• JavaScript

Educational HTTPS traffic inspector in Go—run curl, AWS CLI, Node, or Python commands through a local MITM proxy to log decrypted requests, responses, headers, and bodies.

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• Updated May 13, 2025
• Go

通信调试，TCP调试，串口调试，通信协议调试，设备通信仿真

network-debugging communication-debugging protocol-debugger

• Updated Jun 5, 2026
• TypeScript

A modern Fiddler Classic alternative for macOS. A Fiddler clone for Mac: capture and inspect HTTP/HTTPS traffic, and replay HAR files with an AutoResponder.

macos mock-server har http-proxy https-proxy autoresponder fiddler macos-app api-mocking har-viewer mitm-proxy debugging-proxy network-debugging fiddler-classic web-debugging charles-proxy-alternative proxyman-alternative har-replay fiddler-alternative fiddler-mac

• Updated Oct 8, 2026
• JavaScript

Wirepane: an HTTPS debugging proxy inside Claude Code (Proxyman/Charles alternative). Intercepts and decrypts traffic from your browser, iOS Simulator, iPhone and Android, lists and filters every request, and lets Claude read them.

nodejs macos typescript http-proxy https-proxy developer-tools android-emulator mitmproxy ios-simulator ai-agents claude charles-proxy proxyman mitm-proxy anthropic debugging-proxy network-debugging claude-code claude-code-plugin claude-code-mod

• Updated Nov 1, 2026
• TypeScript

iOS debugging SDK — network inspector, WebSocket viewer, log console, API mocking, and storage browser in one floating bubble. One line to integrate. Readable by AI agents via MCP.

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• Updated Nov 4, 2026
• Swift

Android-first HTTP/HTTPS debugging proxy with HTTPS MITM, a real-time WebUI, media previews, and response mocking.

android rust mock-server http-proxy https-proxy webui debugging-tools charles-proxy mitm-proxy network-debugging

• Updated Jul 31, 2026
• Rust

CLI utility to check DNS propagation using multiple DNS servers

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• Updated Oct 23, 2026
• Python