Luksmith

Luksmith is a macOS tool for accessing LUKS-encrypted hard drives that contain ext4 file systems. It decrypts the LUKS volume, mounts the underlying ext4 drive, and uses Apple's FSKit userland library to make the drive appear in Finder. The page describes it as a way to mount these drives natively on Apple Silicon Macs.

It was created by a user who moved from Linux to macOS and needed to access encrypted drives holding photos, since macOS has no built-in way to open them.