Fiddler is a premier web debugging proxy used for capturing, inspecting, and modifying HTTP/HTTPS traffic, offering specialized versions like the cross-platform Fiddler Everywhere and the Windows-native Fiddler Classic. These tools facilitate advanced API debugging, traffic manipulation, and secure team collaboration. Download the latest versions on the Telerik Fiddler download page . From Fiddler Classic to Fiddler Everywhere - Telerik.com