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.
- Freemium • Proprietary
- 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.
Fiddler vs Charles opinions
Very good Debugging Software
Its open source, has easier UI controls and works best on Windows.
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.
mitmproxy vs Charles opinions
Not as easy to use, but it's really powerful.
sames features as charles but less easy to access. If you are not affray about command lines options, go using it.
Free and open-source, UI doesn't constantly nag you to pay money.
- Freemium • Proprietary
- Mac
- Windows
- Linux
- BSD
Burp Suite is an integrated platform for performing security testing of web applications.
The Zed Attack Proxy (ZAP) is an easy to use integrated penetration testing tool for finding vulnerabilities in web applications.
OWASP Zed Attack Proxy (ZAP) vs Charles opinions
This is security vulnerability finding software, not a proxy observer.
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
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.
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.
- Freemium • Proprietary
- 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.
- Free • Proprietary
- Mac
- Windows
- Linux
- Waterfox
- Pale Moon
HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.
- Free • Open 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.
