Charles free download for Mac


15 January 2020

Java HTTP proxy and monitor.


Charles is a web proxy (HTTP Proxy / HTTP Monitor) that runs on your own computer. Your web browser (or any other Internet application) is then configured to access the Internet through Charles, and Charles is then able to record and display for you all of the data that is sent and received.

  • SSL proxying: view SSL requests and responses in plain text
  • Bandwidth throttling to simulate slower Internet connections including latency
  • AJAX debugging : view XML and JSON requests and responses as a tree or as text
  • AMF: view the contents of Flash Remoting / Flex Remoting messages as a tree
  • Repeat requests to test back-end changes
  • Edit requests to test different inputs
  • Breakpoints to intercept and edit requests or responses
  • Validate recorded HTML, CSS, and RSS/atom responses using the W3C validator

What's new in Charles

Version 4.5.6:

Note: Version 4 is a paid upgrade from previous versions. Upgrade information can be found here.

  • Bug fixes and fixed security vulnerability.
  • Custom SSL server certificate imports fixed.
  • macOS: Security vulnerability fixed in Charles's system proxy settings helper tool (ProxyHelper).
  • An unauthorised application or user could communicate with Charles's ProxyHelper application to change your system proxy settings.

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How would you rate Charles app?

7 Reviews of Charles

29 December 2015
Version: 3.9.2

Most helpful

Charles is on V3.11.2
29 December 2015
Version: 3.9.2
Charles is on V3.11.2
02 July 2015
Version: 3.9.2
21 January 2014
Version: 3.8.3
Excellent tool. I don't use Charles much, but it's wonderful knowing I have it when I need it. The developer is also very responsive.
Show comment (1)
14 September 2013
Version: 3.7
The developer site is showing 3.8.1
19 May 2011
Version: 3.5.2
This truly is an excellent tool for anyone needing an array of testing options at their disposal. It works flawlessly and does a nice job at breaking down requests and responses in a multitude of ways. The only thing lacking is more in depth documentation, although with it doesn't hinder the functionality of this excellent application.
06 July 2010
Version: 3.5.1
I've been using Charles daily for more than a year now, and just realized that I've never reviewed it here. So to correct this omission: If you make your living creating Web applications, you REALLY should be using Charles. It takes all guesswork out of the interaction between server and browser -- simple GET/POST requests, SSL transactions, Ajax, XML, Rest, SOAP, Flash (even AMF calls), anything -- and shows you exactly what is transpiring when your users interact with your site or service. The best part: It works regardless of which browser you use (in fact, depending on your network settings for a virtual machine, you can even debug using IE in a VM window). You start taking the view for granted, and eventually you'll find you can also edit requests, optimizing your applications to ensure you only get/send the data you need. Firebug, which I used extensively before trying Charles, will soon seem "quaint" -- and woefully underpowered.
17 August 2008
Version: 1.6
Amazingly useful tool for debugging applications that run any http requests. It's well-polished and has a nice intuitive interface. Even though it's a Java app, they did a great job making the UI look almost native.