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.

Basic https server for debug incoming http requests

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.

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

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.

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

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

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.

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

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

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

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.

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。

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.