squirreldisk
Free, open-source disk usage analyzer for macOS, Windows and Linux
...The application supports local drives, remote servers accessed through SSH, and cloud storage services through rclone. A collection area lets users gather files for deletion, transfer, or further review. Cleanup options include moving items to the Trash, permanent deletion, and secure overwriting. Protected system locations and confirmation prompts help prevent accidental data loss. Additional capabilities include command-line scanning, file manager integration, portable operation, and automatic updates when file contents change.