Online Fiddler Alternatives

    Fiddler is not available as a web app but there are some alternatives that runs in the browser with similar functionality. The best Online alternative is HTTP Toolkit, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Fiddler and six of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Fiddler are StopLight (Free Personal), RestCase (Freemium), CYFIRMA CAP (Freemium) and HTTP Header Live (Free, Open Source).

    The list of alternatives was last updated Jan 29, 2021

    Platforms

    × Clear
    • Mac
    • Windows
    • Linux
    • Online
    • iPhone
    • Google Chrome
    • Firefox
    • iPad
    • BSD
    • Chrome Web Store
    • React
    • Electron / Atom Shell
    • Waterfox
    • Pale Moon
    • Node.JS
    • Chromium
    • Chrome OS

    Features

    • Debugger
    • HTTP Monitoring
    • Proxy
    • REST API
    • Network Monitoring
    • HTTP Proxy
    • Firefox Extensions
    • Sniffer
    • Portable
    • Web Testing
    • Penetration Testing
    • Ssl
    • Detailed packet analysis
    • Api
    • Google Chrome Extensions
    • Legacy Firefox Addon
    • Logging
    • Machine Learning
    • Mocking of APIs
    • Monitor HTTP Traffic

    License

    • Free
    • Open Source
    • Paid
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    Showing 6 of 6 alternatives