Looking for Fiddler Classic, the original Windows-only version? Download it here
Fiddler Everywhere is a secure and modern web debugging proxy for macOS, Windows, and Linux. Capture, inspect, monitor all HTTP(S) traffic between your computer and the Internet, mock requests, and diagnose network issues in an approach that is straighforward yet yields measurable time and cost-savings.
What's inside Fiddler Everywhere is supercharged inspecting, debugging and mocking features. Fiddler Everywhere can be used for any browser, application, or process and is engineered to deliver extraordinary results and alleviate unneeded burdens because your time is valuable.
With an intuitive UI, you can focus on the debugging task at hand without being slowed down. You’ll appreciate the straightforward approach yet value the enhanced usability.
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.
The Auto Responder feature in Fiddler Everywhere allows you to effortlessly create mock requests and organize your auto-responding rules into groups. Easily test changes to web code without updating the production server,
Rely on user-friendly and secure collaboration within Fiddler Everywhere — no more manually exporting sessions or sending the captured traffic through email. Fiddler Everywhere lets you save captured traffic, add comments and share it with your colleagues — all without switching context.
Join these companies and the 4 million developers who are already building,
running, and debugging with Fiddler Everywhere.
Avoid the risk of costly oversights.
Deliver better outcomes.
Access network logs in seconds.
Create a brilliant, efficient team.
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 Chrome extension solution for support teams to report and fix bugs.
Fiddler is used by tens of thousands of Users daily and they love it! 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.
Users of G2.com provide unbiased user reviews after they objectively access business software.
Get latest updates on Fiddler delivered straight to your mailbox.