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Fiddler Everywhere enables you to capture, analyze, modify, and replay web traffic, including SignalR, WebSockets, MessagePack, SSE, gRPC, Protobuf. It allows you to intercept and inspect HTTP requests, responses, headers, cookies, and payloads with unparalleled visibility, enabling precise diagnosis and prompt resolution of network-related issues.
Why Choose Fiddler Everywhere?
Fiddler Everywhere is a modern, easy-to-use web debugging proxy for macOS, Windows, and Linux. It’s a high-performance cross-platform tool for any browser or system.
All You Need In One Place
Accessible Snapshots
Store, organize, reload, and share your session’s snapshots that contains previously captured traffic.
Customizable Filters
Concentrate on what’s important by showing only targeted traffic based on your оwn matching criteria.
Powerful Capturing Modes
System Proxy Capturing, Network Capturing, Browser capturing, and Terminal capturing.
Traffic Manipulation and Debugging
Modify traffic, set debug breakpoints, create custom modification rules and filters to automate session manipulation.
Compose Requests
Quickly create, modify, execute and save API request.
Decoding of Multiple Protocols
HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, Protobuf.
Unparalleled Visibility Into Traffic
View detailed request and response headers, bodies, cookies, raw, time, duration, including HEX, TLS version, certificate information and detailed size information.
Announcement
Enterprise-Ready!
Fiddler Everywhere is enterprise-ready! It supports SSO for streamlined access, offers Offline Licensing for use in controlled environments, and provides robust App Configuration Management for easy deployment and updates. It ensures adherence to major compliance standards such as GDPR, and SOC 2, maintaining the highest level of any organization’s data privacy and security. Additionally, it integrates smoothly with Procurement Processes, offering Complete Product Information for informed decision-making and seamless adoption. With support for Patch Management Systems and advanced Authentication and Authorization options, Fiddler Everywhere meets corporate needs in security, compliance, and operational efficiency.
Ready to Talk?Key Features
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Powerful Capturing
Seamlessly track in depth with the advanced Browser, Terminal and Network Capturing capabilities in addition to the System proxy.
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Advanced Filters
Multiple approaches to search and filter traffic information, allowing you to promptly narrow down network related issues.
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Multiple Protocols
Capture and decode traffic in detail, including HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, Protobuf.
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Extensive Rules
Create custom rules – modify headers, redirect requests, change response content, set breakpoints to exercise precise control over web traffic.
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API Composer
Create, analyze and modify requests to gain deeper insights into how your web applications and services behave.
Enable Web Debugging for Anyone
on Your Team
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.
Fiddler Everywhere is Feature-Rich
Base Features
- Inspect Web Traffic (HTTP & HTTPS)
- Inspect Mobile Device Traffic
- Inspect Desktop Traffic
- Export Captured Traffic
- Filter Traffic
- Quick Search
- Capture Traffic Through Terminal
- Create Custom Columns
- HTTP/2 Support
- WebSocket Support, Server-sent Events, MessagePack, SocketIO
- Traffic Comparison – Beta
- TLS 1.3 Support
- UI themes and horizontal layout selection
Advanced Features
- Network Adapter Capturing (macOS)
- Compose API Requests
- Edit Requests in Composer
- Create Rules
- Breakpoints
- Save Sessions
- Save Composer Requests
- Save Filters
- Capture gRPC – Beta
- Policy-driven installation
- SSO
- Offline Mode
- SOC 2 certified
Sharing & Collaboration
- Sharing of Sessions
- Sharing of Composer Requests
- Sharing of Rules
- Add Context with Comments/Note
Upcoming Features
- Bandwidth Simulation
- Mask/Delete Requests with Sensitive Data
- Performance Suggestions
- Composer Variables
What Users Say
We use Fiddler as a proxy in our development process. We're able to save countless hours by running code locally instead of publishing changes. This makes it very easy to test and confirm code changes work properly before pushing anything to production.
Fiddler made it easy for us to work on different projects set up in different environments. Fiddler enables us to work on all projects simultaneously with very minimal settings needed for each project. It not only increases our productivity (users need to learn less applications) but also reduces costs (reduces the number of applications needed to buy).
I appreciate Progress Telerik Fiddler's intuitive interface and robust web debugging capabilities, providing seamless navigation and invaluable insights into HTTP traffic for optimal application performance.
Best Proxy Server Tool I have used. For web developers, it is one of the advanced tools with the simplest UI in the business. Easy to use. Lots of features.
It's so simple to use, really easy to filter out requests to only see the bits that you are actually interested in. It's such a useful and well-built project that I insist all developers on my team have it so that they can use it for debugging and to aid in building new integrations. Invaluable tool. Cannot recommend it enough.
Frequently Asked Questions
What's New
Redesigned Timings
The new Timings view gives you more detailed insights to help analyze performance. You can now view timings for both standard protocols like HTTPS, as well as bidirectional ones like gRPC.
Advanced Replay Options
The advanced replay feature gives you more control over how captured sessions are replayed. You can now choose to replay a session multiple times and decide whether the replays run sequentially or in parallel.
Default Templates in Rules
We are now introducing the new "Default Templates" in Fiddler Everywhere's powerful Rules feature. With this update, users can access a collection of pre-built rules that modify both requests and responses.
Support and Learning
Blog Post
Video
Additional Fiddler Tools
There’s a Fiddler Product for Every Need
Fiddler Classic
Original Fiddler Web Debugger tool — feature rich, functional and supported only on Windows.
FiddlerCore
Reliable and powerful .NET library allowing you to capture and modify HTTP and HTTPS traffic.
Fiddler Cap
A lightweight companion tool to capture web traffic from end-users or from customer environments.
