Find Bugs Faster With Fiddler
Capture, inspect, and modify HTTP/S traffic so you can find bugs in minutes, not hours, even when logs conflict across systems.
Fiddler Everywhere is our most popular solution for modern web debugging, or choose the Fiddler product that's right for you.
Choose Your Fiddler
Fiddler Everywhere is our recommended solution for modern web debugging, licensed for professional and commercial use. It delivers advanced debugging features, dedicated support, and cross-platform traffic inspection for Windows, macOS, and Linux.
Need Fiddler Classic instead? Fiddler Classic remains available for eligible non-commercial use under the updated EULA.
Multiple options for capturing, including from remote device and offline mode
Support for multiple protocols
Extensive Rules for modifying traffic
Advanced filters for narrowing down traffic
AI-assisted debugging with Fiddler MCP
Enterprise-ready, including SOC 2 certification
Fiddler Everywhere Reporter is a free cross-platform traffic capture tool which allows you to:
Start instantly without installation, perfect for restricted-permission environments
Skip registration or licensing, ensuring a faster and hassle-free setup
Capture data easily even as a non-technical user
Receive web traffic from end users or internal teams for debugging
FiddlerCore is an embeddable .NET library which enables you to:
Integrate traffic capture capabilities directly into your code
Monitor and analyze traffic within your application
Gain deep insights and superior performance analysis
Discover delays, missing services and threats in minutes not days
How to Start Your Fiddler Journey
1 Try the Fiddler product(s) and the web debugger that aligns with your needs.
2 Integrate Fiddler into your workflow for rapid, elegant debugging and troubleshooting.
3 You’ll start realizing the high value of benefits of Fiddler through the acceleration of both your time and cost savings.
Hundreds of Thousands of Organizations
are Using Fiddler
Join these companies and the 4 million developers who are already building, running, and debugging with Fiddler proxy tools.
4.4 Out of 5 Overall User Rating
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.
Support & Learning
A Trial of Any of the Fiddler Products Gives You:
- A fully functional version of the software.
- Strict data privacy protection. Your data remains with you, it will never be shared.
- Easy upgrade path to a licensed product.
- Full access to all online documentation, community forums and tutorials.