Charles 4.0.1 – 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

Version 4.0.1:

Bug fixes
  • Fix display of local IP address in Help menu
  • Fix negotation with external proxies for authenticated SSL connections
  • Fix occassional hang on macOS with retina displays
  • Fix NPE in DNS Spoofing for repeated events
  • Fix HTML validation
  • Refresh current viewer when viewer mappings change
  • Ensure throttle settings are applied to repeated HTTP 2 requests
  • Rename Mac OS X to macOS
  • Improve PCAP file import


OS X 10.7 or later


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