Charles Icon

Charles is an HTTP web proxy and monitor for Windows and Mac. This tool enables you to seamlessly capture and visualize every piece of data exchanged between your device apps and the Internet by efficiently configuring and routing all traffic through the program. The tool operates a man-in-the-middle attack specifically designed for HTTP and SSL communication, which allows you to intercept and analyze the data being transmitted during HTTPS sessions. By doing so, it grants you the capability to debug and inspect the content of these secure communications.

Charles Proxy is an invaluable and reliable tool for web and internet development and security analysis, especially when it comes to quickly troubleshooting any issues. It empowers developers to monitor all HTTP and SSL/HTTPS traffic flowing between their machine and the Internet. This encompasses requests, responses, and HTTP headers, which carry essential information such as cookies and caching details.

Charles greatly enhances XML development in web browsers, particularly with AJAX (Asynchronous JavaScript and XML) and XMLHTTP. It allows you to observe the actual XML data transmitted between the client and the server, providing invaluable insights for developers. Additionally, it can emulate modem speeds by skillfully limiting your bandwidth and adding latency, allowing you to test different speeds just as a visitor would experience them.

Charles will autoconfigure your browser's proxy settings on the following browsers:

  • Windows system proxy settings (includes Internet Explorer and most other applications)
  • Mac OS X system proxy settings (includes Safari and most other applications)
  • Mozilla Firefox (on all platforms)
Note: Firefox no longer requires an add-on to work with Charles. Instead, configure Firefox to use your system proxy settings.
Charles Main Interface Screenshot

Key Features:

  • SSL Proxying – man-in-the-middle for HTTP/SSL communication.
  • 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

Last Update: March 12, 2025

Current Version: 5.0

License: Shareware

Languages: Multiple Languages

Supported Operating Systems:
Windows XP / Vista / 7 / 8 / 8.1 / 10 / 11
Mac OS X 10.7 - 10.15
Linux

Developer: XK72

Homepage: CharlesProxy.com

Disclaimer: The direct download links we offer for this software are sourced from the official website of the author or developer, guaranteeing they are 100% original and unaltered. However, because the links are external, we cannot guarantee their safety, availability, or download speeds. We will research and find various download options for your software, including online installers, full offline installers (usually 'exe' or 'msi', 'dmg', and occasionally 'iso' or torrent), and portable editions (commonly 'zip' or 'rar'). We wish to clearly express our firm opposition to piracy. We maintain a strict zero-tolerance policy against piracy and will neither offer nor share any pirated or illegal versions or tools. We strongly advise against using such methods, as they can damage your devices. We highly encourage you, if you value this software, to invest in a legitimate license. Doing so not only guarantees your safety but also supports the developers, resulting in improved software quality.