Explore Fiddler's web debugging tools and proxy solutions to debug, mock, capture, and modify web and network traffic.

Download and install Fiddler Classic web debugging tool. Watch a quick tutorial to get started.

Fiddler Everywhere is a modern, easy-to-use web debugging proxy tool for Windows, macOS and Linux which captures, logs, monitors and inspects all HTTPS traffic, allowing you detailed visibility into …

Use Fiddler Everywhere to capture, inspect, debug, mock and export HTTP (s) network traffic on macOS, Linux and Windows.

Download Fiddler Everywhere, the professionally built and supported web debugging proxy tool for Windows, macOS, and Linux. Free and fully-functional trial.

Fiddler Everywhere allows you to capture and analyze network traffic from macOS, Windows, Linux, inspect web sessions, remote API calls, cookies, and header properties in detail.

Nov 17, 2025 · Fiddler supports mocking, modifying, and setting breakpoints on all HTTP requests and responses. With Fiddler's rules, you can quickly change HTTPS requests and responses without …

Nov 6, 2025 · Fiddler's Filters tab allows you to easily filter and flag traffic displayed in the Fiddler Classic UI, as well as perform some lightweight modifications. This article describes the available …

Purchase Fiddler Everywhere, your modern web debugging proxy for Windows, macOS and Linux. Plans include comprehensive support and access to enhanced features.

FiddlerCap is being retired, check out Fiddler Everywhere Reporter - our alternative and free, new cross-platform solution.