Given a path on your hard-drive, diskonaut scans it and indexes its metadata to
memory so that you could explore its contents (even while still scanning).

Once completed, you can navigate through subfolders, getting a visual treemap
representation of what's taking up your disk space. You can even delete files or
folders and diskonaut will track how much space you've freed up in this session.

WWW: https://github.com/imsnif/diskonaut