Fiddler AlternativesOnly apps categorised as HTTP(S) Debuggers

The best HTTP(S) Debugger alternative to Fiddler is Charles. It's not free, so if you're looking for a free alternative, you could try mitmproxy or HTTP Toolkit. If that doesn't suit you, our users have ranked more than 50 alternatives to Fiddler and 11 are HTTP(S) Debuggers so hopefully you can find a suitable replacement. Other interesting HTTP(S) Debugger alternatives to Fiddler are Proxyman, Requestly, HttpMaster and Caido.

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Fiddler alternatives are mainly HTTP(S) Debuggers, but if you're looking for Web Debuggers or HTTP Clients you can filter on that. Other popular filters include Mac, Linux, Open Source, Mac + Open Source, Windows, iPhone and Google Chrome. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Fiddler.
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Alternatives list

  1. Charles icon

    Charles

     68 likes

    Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).

    31 Charles alternatives

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • iPhone
    • iPad
    Charles screenshot 1
     
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    1
  2. mitmproxy icon

    mitmproxy

     78 likes

    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...

    24 mitmproxy alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    mitmweb
     
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    3
  4. HTTP Toolkit icon

    HTTP Toolkit

     102 likes

    HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.

    51 HTTP Toolkit alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Docker
    HTTP Toolkit screenshot 1
     
  5. Proxyman icon

    Proxyman

     16 likes

    Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains. Available on macOS, iOS, Windows & Linux.

    59 Proxyman alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • iPhone
    • iPad
    Native macOS app.
     
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    1
  6. Requestly icon

    Requestly

     33 likes

    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.

    38 Requestly alternatives

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Microsoft Edge
    • Google Chrome
    • Software as a Service (SaaS)
    • Selenium
    • Firefox
    Modify HTTP Headers
     
  9. Caido icon

    Caido

     5 likes

    Caido is a cutting-edge web application security tool that enables users to efficiently identify and assess potential vulnerabilities in their web applications. It can be easily integrated into both personal and enterprise environments, making it adaptable to a wide range of...

    9 Caido alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Online
    Interception
     
  10. SmartSniff icon

    SmartSniff

     13 likes

    SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers. You can view the TCP/IP conversations in Ascii mode (for text-based protocols, like HTTP, SMTP, POP3 and FTP) or as hex dump (for non-text base...

    37 SmartSniff alternatives

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Windows
    SmartSniff screenshot 1
     
  11. Fluxzy Desktop icon

    Fluxzy Desktop

     8 likes

    Fluxzy Desktop is a comprehensive HTTP debugger and Man-in-the-Middle (MITM) tool available for Windows, macOS, and Linux. It's tailored for developers and network professionals seeking in-depth web traffic analysis and manipulation. Key features include:

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    • Mac
    • Linux
    Friendly UI with a search in every block, easing access to filters, settings, and features.
     
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    1
  12. Network Spy icon

    Network Spy

     1 like

    Network Spy is a cross-platform network proxy and traffic analyzer built with Tauri, Rust, and React. It helps developers intercept, inspect, decrypt, and debug HTTP(S) traffic through a fast and modern desktop interface.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Standard Request Response Viewer
     
  13. ReqRes icon

    ReqRes

     2 likes

    ReqRes is an open-source, high-performance, modern native web debugging proxy for macOS. It lets you capture, inspect, modify, and intercept HTTP(S) traffic in real time.

    Cost / License

    • Freemium
    • Open Source

    Application types

    Platforms

    • Mac
    ReqRes screenshot 1
     
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