http-debugging

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

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.

HTTP(S) debugging proxy for macOS, Windows and Linux: capture, inspect, mock, break and replay traffic, diagnose what slows it down, and see what AI agents like Claude Code and Codex do — LLM calls, tokens and costs, MCP tool calls, prompt cache. A modern Fiddler alternative.

Basic https server for debug incoming http requests

Ready-to-run HTTP/HTTPS interceptor scripts to tweak, debug & ad-block apps on your own device. Block ads, mock APIs, rewrite requests, decrypt HTTPS — no root.

Free, open-source HTTP(S) debugging proxy for macOS: capture, decrypt, inspect, mock and modify traffic from your Mac, simulators and devices.

Native, read-only MCP bridge exposing live Charles Proxy traffic to MCP clients like Claude Code, Codex and Cursor

Live HTTP dashboard for ASP.NET Core — inspect requests, responses, headers, bodies, and outgoing HttpClient calls with no external setup.

Efficient Fiddler script for mocking API responses. Tailored for developers to simulate APIs during testing, ensuring easy integration and usage.

Self-hosted HTTP tunnel with request inspection and replay. Forward traffic through your own relay, watch live requests in VS Code, and replay them on demand. CLI + relay server + VS Code extension.

See, replay and fake the HTTP traffic between your local Docker containers. A tiny reverse proxy with a web UI: record requests, replay them, mock responses. No SDK, no code changes.

SWIFT — the complete network station for Firefox. Every request captured once and explained in plain words: GraphQL, JSON-RPC and SOAP calls named, a one-sentence verdict, bodies, TLS, cookies, findings it can prove. Rules, interception, replay, OpenAPI export. No telemetry, no dependencies. By NeoZ.

🔎 See exactly what is hitting your service

Replay-verified minimal JSON reproductions and deterministic TypeScript/OpenAPI drift checks. Local-first CLI and MCP server.

Fork of traefik/whoami: a tiny Go HTTP server for inspecting request and network details, with JSON output, health checks, and WebSocket echo.

Inspect Charles Proxy traffic from AI clients: capture, decode, analyze and replay HTTP requests. Single Go binary for macOS, Linux and Windows.

An application for sending HTTP TRACE requests to debug request flows.

Open-source HTTP(S) debugging proxy for Windows & macOS. Inspect HTTP/2, WebSocket and gRPC; rewrite or mock traffic, pause with breakpoints, replay requests. 开源跨平台抓包与断点改包工具，支持 HTTPS 调试、规则改写与请求重放。

Free open-source HTTP/HTTPS debugging proxy for macOS. Intercept, decrypt and inspect traffic, WebSockets and Map Local. MIT alternative to Charles Proxy and Proxyman.

Charles Proxy — independent third-party profile of a public API surface, by API Evangelist. Charles Proxy is an HTTP proxy and HTTP monitor that enables developers to view all HTTP and SSL/HTTPS traffic between their machine and the Internet, including requests, responses, and HTTP headers.