3129 GrandPerspective is a small utility application for Mac OS X that graphically shows the disk usage within a file system. It can actually help you to manage your disk, as you can easily spot which files and folders take up the most space, and I found it also quite entertaining. It uses a so-called tree map for visualisation. Here's a shot of the representation of my main file archive folder:

The graphical representation is a logical one, where each file is shown as a rectangle with an area proportional to the file's size. Files in the same folder appear together, but other than that the placement of files is arbitrary. You can observe this by resizing the view window. The location of files will change, in order to keep the rectangles as square as possible.

There is also a drawer with three tabbed categories of information about your folder that can be displayed.

To install the application, open the disk image and drag the application icon onto your Applications folder, or wherever you want to put it.
Run the application by clicking on the icon. Select a folder to analyze using the navigation dialog.

New in version 1.3.1:
New functionality:

• 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

Bug fix:
• Fixed bug #2935266: Cannot open or reveal files with slashes in their names

System requirements:
Mac OS X 10.2 or later.

System Support:
PPC/Intel

Free - The GrandPerspective application has been released as Open Source
under the GNU General Public License.

For more information, visit:
http://grandperspectiv.sourceforge.net/

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