Basic https server for debug incoming http requests

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

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

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.

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

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.

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

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.

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.

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

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.