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GrandPerspective is a small utility application for Mac 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.

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Download GrandPerspective Download from the App Store

Download GrandPerspective from Sourceforge for free or from the App Store for $1.99. You'll get the same app either way.

So what's the difference? When you get it from the App Store you know that it has passed Apple's review and quality control, you help cover distribution costs and you support further development.


For the historians amongst you, there are even records of older news.


Download it

GrandPerspective has been released as Open Source under the GNU General Public License. The official release files are available from the GrandPerspective download area at SourceForge. The latest release (Version 2.0.0) consists of two files:

System requirements

The latest release requires the following:

If you have an older system, you need to download an older version of GrandPerspective:

App Store

GrandPerspective is also distributed via the App Store as requested by several users. This exposes the app to a wider audience, including some who will only install software distributed via the App Store. I charge a small fee of $1.99 for the app when it is downloaded from there to cover the required developer program membership and other development costs.

Note: Updates here lag the releases available via SourceForge by a few weeks. Should SourceForge users find bugs in the new release, these will be fixed before making the (updated) application available on the App Store.

Release notifications

Subscribe to the GrandPerspective announcement mailing list if you want to be notified about new releases.


You can support development of GrandPerspective by:


If you need support, you should first check the extensive help documentation that comes with the application. Should that does not help, you can try the Help forum.


You can provide feedback about GrandPerspective in various ways:


GrandPerspective is fully internationalized. This means that it can be localized to support languages other than English. I can manage the translation into Dutch, but for any other language, I will need your help. So, hereby a call for volunteers. If you want to help out with making GrandPerspective available in your mother tongue, or any other language you speak fluently, find out how you can help.


You can show your appreciation for GrandPerspective and support further development by making a donation.

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Related software

GrandPerspective is certainly not the first of its kind. Tree maps have been around for a while, and their application to file systems is not novel either. A few other disk usage visualisation tools that employ tree maps are:

So, why GrandPerspective? Well, as you may have guessed it's a fun little coding project and I needed to pick something to code on my new Mac Mini. Having said that, it does have a few things going for it. Firstly, GrandPerspective is developed specifically for Mac OS X, which narrows the immediate competition down to Disk Inventory X, as far as I'm aware. Secondly, GrandPerspective has its own way of visualising directory trees. The layout algorithm that is used is simple and effective, but novel to the best of my knowledge. Also, the file rectangles are drawn to be as clear and unobtrusive as possible. Whether you like it or not is a matter of taste, but you've got a choice. Thirdly, GrandPerspective will intentionally be kept as basic as possible. It should do one thing only, and do it well. That means it is a lean and mean application. GrandPerspective's memory requirements and the size it occupies on disk are pretty minimal. For those concerned about disk space, the latter must count for something, right? Finally, it has a cute logo that will enhance anyone's Dock. ;-)

In the limelight

Various web sites have helped to get the word out about GrandPerspective. Thanks to all.

GrandPerspective Editor's Choice Mac Informer Editor's pick award

Reviews and recommendations


Software catalogs

The most up-to-date entries are listed at the top. The bottom of the list contains some very old entries.


Other stuff

And now... something completely different

Still here? Well, then you might also be interested in checking out other stuff I have made:

Get the grand perspective,
Narrow the field of focus,
Retain a sense of control.

Copyright 2005-2018, Erwin Bonsma. Last updated: 19 Feb 2018