From Eriban Software:
GrandPerspective is a small utility application for Mac OS X that graphically shows the disk usage within a file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space. It uses a so called tree map for visualisation. Each file is shown as a rectangle with an area proportional to the file's size. Files in the same folder appear together, but their placement is otherwise arbitrary.
What's new in this version:
- Application now also accepts drops of folders and volumes
- Exported Scan Folder and Load Scan Data as a service.
- Added Services menu item to application menu
- Fixed bug #2935266: Cannot open or reveal files with slashes in their names