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

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.

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.

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.

🔎 Drop-in HTTP request reflector — see exactly what is hitting your service

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

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.

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.

Single-binary webhook inbox — capture, inspect, and debug HTTP webhooks with zero dependencies. Embedded SQLite, live dashboard, cross-platform. Just scp and run.

Mitmproxy — independent third-party profile of a public API surface, by API Evangelist. mitmproxy is a free and open source interactive HTTPS proxy that allows developers and security researchers to intercept, inspect, modify, and replay HTTP and HTTPS traffic flows. It includes mitmproxy (interactive console), mitmweb (web-based interface), and mi

A browser extension for debugging web requests—intercept, redirect, rewrite headers and parameters, mock responses, and simulate latency.

Fiddler — independent third-party profile of a public API surface, by API Evangelist. Fiddler by Telerik (Progress Software) is a suite of HTTP debugging proxy tools for capturing, inspecting, modifying, and replaying HTTP and HTTPS traffic between computers. The product family includes Fiddler Everywhere (cross-platform), Fiddler Classic (Windows)