Depending on your operating system and specific needs, you can choose between two primary versions of the Fiddler network tool:
: The modern, cross-platform version designed for Windows (10+), macOS (11+), and Linux (Ubuntu 20+) . It supports modern protocols like HTTP/2, gRPC, and WebSockets and includes collaboration features for teams. It offers a free trial before requiring a subscription. fiddler network tool download
Fiddler acts as a "middleman" (proxy) to provide deep visibility into your application's network behavior: Web Debugging Proxy and Troubleshooting Tools | Fiddler Depending on your operating system and specific needs,
: The original, Windows-only version that remains free for personal and corporate use. While it is no longer in active development, it is still widely used for local proxy debugging. Core Features of Fiddler cross-platform version designed for Windows (10+)