Alternatives to Fiddler Everywhere
A cross-platform web debugging proxy for capturing, inspecting, modifying and replaying HTTP(S) traffic. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Fiddler Everywhere
A cross-platform web debugging proxy for capturing, inspecting, modifying and replaying HTTP(S) traffic.
Replacements
Listings that take over the same core job as Fiddler Everywhere.
Charles
An HTTP and HTTPS debugging proxy that shows all web traffic between a computer and the internet.
Charles is also a paid HTTP and HTTPS debugging proxy on Windows, macOS and Linux, and can work as a reverse proxy, but it needs certificate setup on clients for HTTPS inspection.
Proxyman
Desktop HTTP and HTTPS debugging proxy for capturing, inspecting and mocking network requests.
Proxyman is freemium rather than paid, runs on Windows, macOS and Linux with a native macOS interface, and offers breakpoints, Map Local and scripting for mocking requests.
HTTP Toolkit
An open-source desktop tool for intercepting, inspecting and rewriting HTTP and HTTPS traffic.
HTTP Toolkit is free and open source, offers one-click interception for many tools and can target a single client, though it is desktop only with no mobile app.
Reqable
An HTTP debugging proxy and REST API client for desktop and mobile in one application.
Reqable is freemium and combines traffic capture with a REST API client, adding Android and iOS apps alongside desktop, though advanced use needs a paid licence.
Similar software
Related functionality, not a direct replacement.
Wireshark
The network protocol analyser: capture traffic and read it packet by packet, with dissectors for hundreds of protocols.
MQTTX
A desktop, web and command-line MQTT client for testing brokers, topics and messages.
websocat
A command-line WebSocket client and server, like netcat or curl for ws:// with socat-style features.
httpx
Inspect HTTP services with ProjectDiscovery's command-line toolkit.
Pinggy
A tunneling service that gives localhost a public URL over SSH, with a web debugger for traffic.
ngrok
A tunnelling agent and gateway that exposes a local app to the internet with request inspection.
