Sizewise

Choose a disk, a common folder, or any folder by its path, and scan it in Sizewise.

Scan the folder selected in Finder, or the front Finder window's folder when nothing is selected.

Show how much space the folder selected in Finder takes up, without opening Sizewise.

List the largest files in your home folder or another folder, then reveal, preview, or move them to the Trash.

Show your startup disk's available space in the menu bar, and scan any disk in Sizewise from its menu.