About Fiddler Everywhere

Amplify your debugging efforts with a Web Debugging Proxy for any device or platform.

Fiddler Everywhere is a secure and modern web debugging proxy for macOS, Windows, and Linux. It empowers you to capture, inspect, monitor all HTTP(S) traffic between your computer and the Internet. Fiddler Everywhere integrates with your workflow, and facilitates the mocking of requests, and accelerates the diagnosis of network issues. Fiddler Everywhere delivers a choreographed approach that is straightforward yet yields measurable time and cost-savings.

Sophisticated User Experience
Style your Fiddler Everywhere application, choosing between the alluring Default Light, Default Dark, Light Blue, or Dark Blue themes.

Nimble API Composer
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.

Insightful, Elegant Overview Inspector
Gain a whole new level of visibility when monitoring requests and completing a performance review. The new Overview Inspector comes with a range of widgets designed to up your performance game in a highly visual fashion.

Robust Request and Response Mocking (Rule Builder)
Your power tool for mocking server responses and simulating real-life scenarios. With Rule Builder, you can create rules and automatically triggering a specific request based on the conditions you specify.

Amplified Team Collaboration
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.

How to use Fiddler Everywhere - By Use Case

Comprehensive Web Debugging - Avoid the risk of costly oversights.
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.

Unsurpassed Request and Response Mocking - Deliver better outcomes.
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.

Secure HTTP/S Traffic Recording - Access network logs in seconds.
Use Fiddler Everywhere to log all HTTP/S traffic between your computer and the Internet. Debug traffic from virtually any application that supports a proxy.

Remarkable Team Collaboration - Create a brilliant, efficient team.
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.

How to use Fiddler Everywhere - By Role

Developer
With Fiddler Everywhere you can capture, inspect, alter, and replay network traffic - on any browser, any device, and any platform.

QA
Test new features and legacy code by inspecting network traffic and composing rules to diagnose potential problem scenarios, before they occur in production.

Support Engineer
Use Fiddler Everywhere to quickly inspect and diagnose customer issues faster than ever before.