Download Fiddler Classic
Get started with the free web debugging proxy tool exclusively for Windows.
*Please be aware that Fiddler Classic is not in active development and offers no commitments for releases, patches or tech support. By using this product, you assume all associated risks. We recommend upgrading to Fiddler Everywhere.
Building Agents? Cut Execution Costs with Fiddler Everywhere
Capture and replay responses from your agents during development and testing — only on Fiddler Everywhere.
- Reuse responses to cut costs
- Eliminate latency from live calls
- Get consistent, repeatable results
- Available on Windows, macOS, and Linux
IMPORTANT!
Fiddler Classic is not in active development and offers no commitments for releases, patches or tech support. By using this product, you assume all associated risks.
For corporate use we recommend Fiddler Everywhere.
Fiddler Classic does not Support Your OS
Start a free trial of our best-in-class network debugging solution expertly designed for Linux. Cross-platform debugging is easier than ever with:
- Amplified networking debugging features
- An attractive and intuitive UI
- Choreographed releases with new features and enhancements
- Dedicated technical support
Fiddler Classic does not Support Your OS
Start a free trial of our best-in-class network debugging solution expertly designed for macOS. Cross-platform debugging is easier than ever with:
- Amplified networking debugging features
- An attractive and intuitive UI
- Choreographed releases with new features and enhancements
- Dedicated technical support