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Free Charles Alternatives

The best free alternative to Charles is Fiddler. If that doesn't suit you, our users have ranked more than 25 alternatives to Charles and 17 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Charles are mitmproxy, Burp Suite, OWASP Zed Attack Proxy (ZAP) and HTTP Toolkit.

Charles alternatives are mainly Web Debuggers but may also be HTTP(S) Debuggers or Firewalls. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Charles.
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Charles iconCharles
  60
  • Mac
  • Windows
  • Linux
  • iPhone
  • iPad

Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS...

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  1. Fiddler icon

    Fiddler

    • FreemiumProprietary
    • Windows

    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 data.

    Screenshot
    Fiddler vs Charles opinions
    Most users think Fiddler is a great alternative to Charles.

    Very good Debugging Software

    Positive comment ago
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    0

    Its open source, has easier UI controls and works best on Windows.

    Positive comment ago
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    -17
  2. mitmproxy icon

    mitmproxy

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    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.

    mitmweb
    mitmproxy vs Charles opinions
    Almost everyone thinks mitmproxy is a great alternative to Charles.

    Not as easy to use, but it's really powerful.

    Positive comment ago
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    4

    sames features as charles but less easy to access. If you are not affray about command lines options, go using it.

    Positive comment ago
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    2

    Free and open-source, UI doesn't constantly nag you to pay money.

    Positive comment ago
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    3


  3. Burp Suite is an integrated platform for performing security testing of web applications.

    Screenshot
  4. OWASP Zed Attack Proxy (ZAP) icon

    OWASP Zed Attack Proxy (ZAP)

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

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

    Screenshot
    OWASP Zed Attack Proxy (ZAP) vs Charles opinions
    This alternative is disputed. OWASP Zed Attack Proxy (ZAP) is still a legitimate alternative to Charles, but it might have issues that some users think are important.

    This is security vulnerability finding software, not a proxy observer.

    Negative comment ago
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    7
  5. 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.

    Screenshot


  6. NetworkMiner icon

    NetworkMiner

    • FreeOpen Source
    • Windows

    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.

    Files extracted from a PCAP
  7. Requestly icon

    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.

    Modify HTTP Headers
  8. Camilla Proxy icon

    Camilla Proxy

    • FreeProprietary
    • Linux

    The always-on web debugging proxy.

    No screenshots yet
  9. HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.

    Discontinued

    The project is no longer developed. Last version, 0.8.14.1, released in May 2014, is not compatible with Firefox, but the extension still works on XUL-based Firefox forks like Waterfox icon Waterfox and Pale Moon icon Pale Moon

    Screenshot
  10. James icon

    James

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • React
    • Electron / Atom Shell
    • Node.JS

    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.

    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.

    Screenshot
Showing 10 of 17 alternatives