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 ot tech support. By using this product, you assume all associated risks. We recommend upgrading to Fiddler Everywhere.
Do More with Fiddler Everywhere
- Cross-platform tool for Windows, Mac, or Linux
- Multiple options for capturing, including system proxy, preconfigured browser instance, and preconfigured terminal process
- Support for multiple protocols, including HTTP(S), HTTP/2, WebSocket, and gRPC communication
- Extensive Rules options for modifying traffic
- Advanced filters for precisely narrowing down traffic
- Composer functionality for creating, editing, and saving API requests
- Sharing, saving, and collaboration options
- Regular release cadence and dedicated support
- SOC 2 certified
Fiddler Classic does not Support Your OS
Try Fiddler Everywhere – it Supports Your Linux Operating System
Try 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
Try Fiddler Everywhere – it Supports Your Mac Operating System
Try 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