Charles Proxy is a professional HTTP debugging and network proxy analysis solution for Windows with the Complete Edition delivering every premium module and advanced capability enabled. Full feature access with no usage limits — Enterprise Setup supports installation and download for production workflows.

Basic https server for debug incoming http requests

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

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

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.

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.

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

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.

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.

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.

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