About
Charles is a web debugging proxy, HTTP monitor, and reverse proxy that lets developers see the HTTP and SSL/HTTPS traffic passing between their machine and the Internet. It shows requests, responses, and the HTTP headers, which include cookies and caching information.
The website describes Charles as available for Windows, Mac OS, and Linux, and notes recent releases such as Charles 5.1, released on 21 April 2026, which brought performance and UI/UX improvements. The site also lists earlier milestones, including the Charles 5 release in March 2025 and the Charles for iOS release in March 2018.
The site points to Karl's blog for ongoing discussion of changes to Charles, and it links to documentation, download, purchase, and support pages.
What's new
All release notesHomebrew cask charles 5.2.2 (sha256 560e10c31bb2e680b9b9dadf0fb66450289bd22b4a68bcac5a13a8cce52d9f05).