The Best Open Source Fiddler AlternativesTop HTTP(S) & Web Debuggers like Fiddler
Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. It is the de facto (and often de jure) standard across many industries and educational institutions.
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- - Wireshark is the most popular Windows, Mac & Linux alternative to Fiddler.
- - Wireshark is the most popular Open Source & free alternative to Fiddler.
Comments about Wireshark as a Alternative to Fiddlerpros, cons and recent commentsGuest
Wireshark is a packet analyzer, not an alternative to debugging proxy like Fiddler or MITM are.2
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. It also features mitmdump, a commandline tool that provides a tcpdump-like interface for saving, viewing and...
Comments about mitmproxy as a Alternative to FiddlerMost users think mitmproxy is a great Fiddler alternative.Guest
mitmproxy is free and well featured, but fiddler does have an easier workflow to start with0Guest
It's able to analyze http requests made by other proxies, many other of the alternatives here only allow creating requests0Guest
mitmproxy is able to edit response data4
The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.Suggest and vote on features
OWASP Zed Attack Proxy (ZAP) Features
Comments about OWASP Zed Attack Proxy (ZAP) as a Alternative to FiddlerSome users think OWASP Zed Attack Proxy (ZAP) is a great Fiddler alternative, some don't.Guest
ZAP is a proxy for attacks, not a proxy for development6
API testing tool. Which allows web developers to create and test custom HTTP requests.Suggest and vote on features
Advanced REST Client Features
Comments about Advanced REST Client as a Alternative to FiddlerThis alternative is disputed. Advanced REST Client is still a legitimate Fiddler alternative, but it might have issues that some users think are important.Guest
Fiddler is a Proxy tool used to intercept and examine HTTP requests not to create an test HTTP requests.5
Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.
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- - Requestly is the most popular SaaS alternative to Fiddler.
Cross-platform desktop is a tool for making HTTP(S) requests from websites or RESTful APIs. Similar to cURL, but with a graphical interface. Can be used for testing and/or developing web applications. Application have minimal user interface and keyboard oriented.Suggest and vote on features
HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools from Docker to Android to GraphQL.Suggest and vote on features
HTTP Toolkit Features
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.Suggest and vote on features
- PortableNetworkMiner can be used from a USB stick or similar with no prior installation.
Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.Suggest and vote on features
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.James has no features, suggest some!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.