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Beta Releases

The beta releases of Charles introduce new functionality for testing. Beta releases will generally be announced and documented on my blog.


The latest beta version of Charles is 4.2b1. Please check that this is newer than the latest release version (4.1.4) before downloading.

Notes for v4.1.4

This beta includes the following bug fixes and improvements:

  • Support raw IPv6 addresses in [] format
  • Fix rare hung-connection fault
  • Fix fault showing detail of multipart request files
  • Fix SSL connection failure when the server failed the handshake by closing the connection
  • Mirror tool: support partial byte range responses
  • macOS: Fix popup menus disappearing
  • WebSocket support extended to off-spec clients that upgrade to WebSockets on an existing HTTP connection

See the version history for details of previous releases.


Windows 64 bit (msi, 58.3 MB)

Windows 32 bit (msi, 57.4 MB)

Mac OS X (dmg, 57.8 MB)
Compatible with Mac OS X 10.7 - 10.12.

Linux 64 bit (tar.gz, 55.8 MB)
Or use the APT or YUM package repositories.

Linux 32 bit (tar.gz, 55.3 MB)
Or use the APT or YUM package repositories.