We now have working macOS versions of dupeGuru built with both UI toolkits and supporting both Intel and M1 chips. The latest downloads are as follows (see details below for more information):

History & Cocoa Phase Out

Most of the history is detailed in macOS Releases Going Forward and macOS Version Notes With the current development mainly focusing on the Qt version for new features and improvements, the Cocoa UI version will no longer be updated with the next minor release. If you would like to discuss this, feel free to start a discussion at https://github.com/arsenetar/dupeguru/discussions.