Open Source Fiddler Alternatives for Mac

Fiddler is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best open source Mac alternative is Wireshark. If that doesn't suit you, our users have ranked more than 25 alternatives to Fiddler and 12 are open source and available for Mac so hopefully you can find a suitable replacement. Other interesting open source Mac alternatives to Fiddler are mitmproxy, HTTP Toolkit, OWASP Zed Attack Proxy (ZAP) and Requestly.

filter to find the best alternatives

Fiddler alternatives are mainly Web Debuggers, but if you're looking for API Clients or HTTP Clients you can filter on that. Other popular filters include Mac + Open Source. 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.
Fiddler iconFiddler
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Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP(S) traffic, set breakpoints, and "fiddle" with incoming or outgoing...

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Fiddler alternatives page was last updated Feb 18, 2025
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  1. Wireshark icon

    Wireshark

     919 likes
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    Wireshark is a premier network protocol analyzer used globally in industries and education, offering multi-platform support, deep protocol inspection, powerful display filters, and VoIP analysis. It allows both live capture and offline analysis, supporting various networks and protocols.

    55 Wireshark alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Snapcraft
    • Flathub
    • Homebrew
    • Chocolatey
    Wireshark screenshot 1

    Wireshark Features

    1.  Detailed packet analysis
    2.  Network Usage History
    3.  Support for Android Things
    4.  Website Monitoring
    5.  Work Item Tracking
    6.  Command line interface

    Wireshark VS Fiddler

     
    Comments about Wireshark as an Alternative to Fiddler
    Most Recent Comment
    Guest
    Positive Aug 19, 2021
    3

    Wireshark is a packet analyzer, not an alternative to debugging proxy like Fiddler or MITM are.

    tso
    Negative Jan 16, 2025
    0

    Wireshark is a low level network analyser, while Fiddler aims HTTP analysis

    AlexanderTaeschner
    Negative Feb 18, 2025
    0

    Wireshark is looking at the lowest levels of the OSI model, while Fiddler is used for HTTP(S) analysis at OSI level 7.

    Fiddler Icon
    Wireshark icon

    • This alternative is disputed. Wireshark is a legitimate Fiddler alternative, but it might have issues that some users think are important.

    • Wireshark is the most popular Windows, Mac & Linux alternative to Fiddler.

    • Wireshark is the most popular Open Source & free alternative to Fiddler.

    • Wireshark is Free and Open SourceFiddler is Freemium and Proprietary
  2. mitmproxy icon

    mitmproxy

     69 likes
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    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...

    17 mitmproxy alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    mitmweb

    mitmproxy Features

    1.  Web page Debugging
    2.  HTTP(S) Debugging
    3.  SSL
    4.  Debugging
    5.  Support for scripting
    6.  Intercepting HTTP calls

    mitmproxy VS Fiddler

     
    Comments about mitmproxy as an Alternative to Fiddler
    Most Recent Comment
    Guest
    Positive Nov 15, 2018
    4

    mitmproxy is able to edit response data

    Guest
    Positive Aug 30, 2021
    0

    mitmproxy is free and well featured, but fiddler does have an easier workflow to start with

    Guest
    Positive May 16, 2019
    0

    It's able to analyze http requests made by other proxies, many other of the alternatives here only allow creating requests

    Fiddler Icon
    mitmproxy icon

    • Most users think mitmproxy is a great Fiddler alternative.

    • mitmproxy is Free and Open SourceFiddler is Freemium and Proprietary
  4. HTTP Toolkit icon

    HTTP Toolkit

     46 likes
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    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.

    48 HTTP Toolkit alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • ES flagSpain
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Docker
    HTTP Toolkit screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  HTTP(S) Debugging
    2.  One click interception
    3.  Debugging
    4.  HTTP mocking
    5.  Ad-free
    6.  Requests monitoring
    7.  Penetration Testing
    8.  Performance analysis
    9.  Built in docs
    10.  HTTPS Support
    11.  OpenAPI integration
    12.  No registration required

    HTTP Toolkit VS Fiddler

     

    • HTTP Toolkit is the most popular Android alternative to Fiddler.

    • HTTP Toolkit is Freemium and Open SourceFiddler is Freemium and Proprietary
    • HTTP Toolkit is LightweightFiddler is not according to our users
  5. OWASP Zed Attack Proxy (ZAP) icon

    OWASP Zed Attack Proxy (ZAP)

     29 likes
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    The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    OWASP Zed Attack Proxy (ZAP) screenshot 1

    OWASP Zed Attack Proxy (ZAP) Features

    1.  Proxy support

    OWASP Zed Attack Proxy (ZAP) VS Fiddler

     
    Comments about OWASP Zed Attack Proxy (ZAP) as an Alternative to Fiddler
    Guest
    Negative Feb 1, 2018
    6

    ZAP is a proxy for attacks, not a proxy for development

    Fiddler Icon
    OWASP Zed Attack Proxy (ZAP) icon

    • Some users think OWASP Zed Attack Proxy (ZAP) is a great Fiddler alternative, some don't.

    • OWASP Zed Attack Proxy (ZAP) is Free and Open SourceFiddler is Freemium and Proprietary
  6. Requestly icon

    Requestly

     31 likes
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    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.

    28 Requestly alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

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

    Properties

    1.  Lightweight

    Features

    1.  Intercepting HTTP calls
    2.  Requests monitoring
    3.  Bug reporting
    4.  Web page Debugging
    5.  One click interception
    6.  Android Development
    7.  HTTP(S) Debugging
    8.  Real time collaboration
    9.  Ad-free
    10.  Dark Mode
    11.  REST Client
    12.  Command line interface

    Requestly VS Fiddler

     

    • Requestly is the most popular SaaS alternative to Fiddler.

    • Requestly is Freemium and Open SourceFiddler is Freemium and Proprietary
    • Requestly is LightweightFiddler is not according to our users
  7. Advanced REST Client icon

    Advanced REST Client

     26 likes
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    API testing tool. Which allows web developers to create and test custom HTTP requests.

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • PL flagPoland
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Chrome OS
    • AppImageHub
    • Google Chrome
    • Chromium
    Advanced REST Client screenshot 1
    Discontinued

    The latest version (17.0.9) is from March 2022.

    Advanced REST Client Features

    1.  Full headers control
    2.  Electron based
    3.  Web tool
    4.  REST API
    5.  Sync with Google Drive
    6.  REST Client
    7.  API Testing

    Advanced REST Client VS Fiddler

     
    Comments about Advanced REST Client as an Alternative to Fiddler
    Guest
    Negative Aug 23, 2019
    5

    Fiddler is a Proxy tool used to intercept and examine HTTP requests not to create an test HTTP requests.

    Fiddler Icon
    Advanced REST Client icon

    • This alternative is disputed. Advanced REST Client is a legitimate Fiddler alternative, but it might have issues that some users think are important.

    • Advanced REST Client is Free and Open SourceFiddler is Freemium and Proprietary
  9. Stoplight icon

    Stoplight

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

    42 Stoplight alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Stoplight screenshot 1

    Stoplight Features

    1.  API Management

    Stoplight VS Fiddler

     
  10. ArdorQuery icon

    ArdorQuery

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    ArdorQuery is a cross-platform tool for performing any HTTP(S) endpoints like REST API, HTML, Images, GraphQL, OData etc.

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Linux
    • Flathub
    ArdorQuery screenshot 1

    ArdorQuery Features

    1.  REST API
    2.  QA Automation

    ArdorQuery VS Fiddler

     
  11. LightProxy icon

    LightProxy

     4 likes
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    Cross platform Web debugging proxy.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    LightProxy screenshot 1

    LightProxy Features

    1.  Debugging
    2.  HTTP Monitoring

    LightProxy VS Fiddler

     
  12. Termshark icon

    Termshark

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    If you're debugging on a remote machine with a large pcap and no desire to scp it back to your desktop, termshark can help!

    License model

    • Free • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD

    Termshark Features

    1.  Remote Debugging

    Termshark VS Fiddler

     
10 of 12 Fiddler alternatives