Open Source Fiddler Alternatives
The best open source alternative to Fiddler is Wireshark, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Fiddler and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Fiddler are mitmproxy (Free, Open Source), OWASP Zed Attack Proxy (ZAP) (Free, Open Source), Advanced REST Client (ARC) (Free, Open Source) and HTTP Toolkit (Freemium, Open Source).
- Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. View 55 alternatives to Wireshark
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP. It provides a console interface that allows traffic flows to be inspected and edited on the fly. View 19 alternatives to mitmproxy
- The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications. View 27 alternatives to OWASP Zed Attack Proxy (ZAP)
- Free • Open Source
- Mac
- Windows
- Linux
OWASP Zed Attack Proxy (ZAP) vs Fiddler
ZAP is a proxy for attacks, not a proxy for development - API testing tool. Which allows web developers to create and test custom HTTP requests. View 43 alternatives to Advanced REST Client (ARC)
- Free • Open Source
- Mac
- Windows
- Linux
- Chrome OS
- Google Chrome
- Chromium
- Chrome Web Store
Advanced REST Client (ARC) vs Fiddler
Fiddler is a Proxy tool used to intercept and examine HTTP requests not to create an test HTTP requests. - HTTP Toolkit is a suite of open-source tools for debugging, testing and building with HTTP(S). View 36 alternatives to HTTP ToolkitNo screenshots yet
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can parse PCAP files and regenerate/reassemble transmitted files and certificates from PCAP files with HTTP, FTP, SMB, SMB2, TFTP and several other protocols. View 38 alternatives to NetworkMiner
- A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions. View 36 alternatives to HttpRequester
Discontinued
Doesn't support Firefox WebExtensions:
https://github.com/tommut/HttpRequester/issues/43Also latest commit d62a6ea on Mar 12, 2017.
- Free • Open Source
- Mac
- Windows
- Linux
- Firefox
- James is a HTTP Proxy and Monitor that enables developers to view and intercept requests made from the browser. It is an open-source alternative to the popular developer tool Charles. View 8 alternatives to James
Discontinued
Not sure if 'discontinued' is quite right, but James has now officially moved in 'maintenance mode', with little or no ongoing development or support. See the readme: https://github.com/james-proxy/james#this-project-is-in-maintenance-mode.
It would be helpful to highlight that here imo.
- Free • Open Source
- Mac
- Windows
- Linux
- React
- Electron / Atom Shell
- Node.JS
- Displays the HTTP header. Edit it and send it. View 11 alternatives to HTTP Header Live
- Cross platform Web debugging proxy. View 5 alternatives to LightProxy