When comparing GrandPerspective vs Disk Cartography, the Slant community recommends GrandPerspective for most people. In the question“What are the best disk space analyzers for Mac OS X?” GrandPerspective is ranked 4th while Disk Cartography is ranked 5th. The most important reason people chose GrandPerspective is:
GrandPerspective has been released as Open Source under the GNU General Public License.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free & open source
GrandPerspective has been released as Open Source under the GNU General Public License.
Pro Small size and fast
Pro Fast
Select what disk or folder to scan, and it goes a lot quicker than Disk Inventory X.
Pro Good filters
Filters by size and type make it easy to pick which files to delete.
Pro Mac native UI
Mac look and feel.
Cons
Con App store version costs $1.99
GrandPerspective costs $1.99 on the Mac App Store, but it can be downloaded for free from Sourceforge.