In addition to the System proxy that captures all network traffic on your computer, and the Browser option that opens a clean browser instance, you can also capture traffic by triggering a Terminal process.
Specify the filter criteria to see captured sessions and save the filters with the power to re-use them each time you search for specific results.
Capture HTTP(S), including HTTP/2, WebSocket, gRPC traffic and connections that support TLS 1.3 on Windows, macOS, and Linux right out of the box with Fiddler Everywhere.
Fiddler Everywhere's API Composer makes it easy to quickly compose, test, group, and organize your API requests. You can make a new request from scratch or edit a request already captured by Fiddler Everywhere.
Your power tool for mocking server responses, modifying traffic and simulating real-life scenarios. Create Rules based on your preferred conditions and organize them into Groups for easier workflow.
Debug traffic from macOS, Windows, or Linux systems and iOS or Android mobile devices. Ensure cookies, headers and cache directives are transferred between the client and server.
Mock or modify requests and responses from any app. It is an uncomplicated way to change the request and responses to test any app without changing the code.
Use Fiddler Everywhere to log all HTTP/S traffic between your computer and the Internet, including HTTP/2, gRPC and WebSocket communication. Debug traffic from any app that supports a proxy.
Collaborate with your team by sharing captured traffic with the click of a button. Accurately add comments and safely share them with your colleagues. Designed to be secure.
Enjoy seamless access and a variety of features which Fiddler Everywhere's offline mode allows, with limited or no internet connection.
Expertly capture, debug, inspect, and modify mobile traffic with ease in a few simple steps! Utilize a single proxy setup on macOS, Linux, Windows, Android, and iOS.
With Fiddler Everywhere you can capture, inspect, alter, and replay network traffic - on any browser, any device, and any platform.
Test new features and legacy code by inspecting network traffic and composing rules to diagnose potential problem scenarios, before they occur in production.
Use Fiddler Everywhere to quickly inspect and diagnose customer issues faster than ever before.
Don’t just take our word for it. G2 Users have consistently rated Fiddler 4.4 out of 5 stars. G2 is a renowned peer-to-peer review site that aggregates user reviews for business software.
There’s a Fiddler Product for Every Need
Original Fiddler Web Debugger tool — feature rich, functional and supported only on Windows.
Reliable and powerful .NET library allowing you to capture and modify HTTP and HTTPS traffic.
A lightweight companion tool to capture web traffic from end-users or from customer environments.
A unified troubleshooting browser extension solution for support teams to report and fix bugs.