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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 seven of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Fiddler are Stoplight, Requestly, RestCase and CYFIRMA CAP.

Fiddler alternatives are mainly Web Debuggers but may also be HTTP(S) Debuggers or HTTP Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Fiddler.
This page was last updated Jun 21, 2022
Fiddler
  196
  • FreemiumProprietary
  • Windows

Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you...

Learn more about Fiddler

  1. 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.

  2. Stoplight

    • Free PersonalOpen Source
    • Mac
    • Windows
    • Linux
    • Online

    Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.



  3. Requestly

    • FreemiumProprietary
    • Mac
    • Windows
    • Linux
    • Online
    • Microsoft Edge
    • Google Chrome
    • Software as a Service (SaaS)
    • Selenium
    • Firefox

    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.

  4. RestCase

    • FreemiumProprietary
    • Online

    RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.

  5. CYFIRMA CAP

    • FreemiumProprietary
    • Online

    CAP, a predictive cyber threat visibility and intelligence analytics platform.



  6. HTTP Header Live

    • FreeOpen Source
    • Windows
    • Online
    • Google Chrome
    • Firefox

    Displays the HTTP header. Edit it and send it.

  7. Speedrank

    • FreemiumProprietary
    • Online

    Speedrank monitors the performance of your website in the background. It displays Lighthouse reports over time and delivers recommendations for improvement. Speedrank is a paid product with 14-day-trial.

Showing 7 of 7 alternatives