Based on this question, I would like to know if there are any good programs to visualize file system usage on OS X?

I used to have SpaceMonger when I was using a PC and would love to find some alternatives for my Mac.


5 Answers 5


Have a look at

With DaisyDisk you can free up disk space by quickly finding and deleting big, useless files. The program scans any mounted disk and displays it on the sunburst map, where segments mean files and folders, proportionally to their sizes. The map is easy to read and navigate. You can also quickly preview any file and reveal it in Finder to delete.

Daisy Disk

OmniDiskSweeper is also another alternative.

OmniDiskSweeper presents you with a list of disks attached to your machine. Double-click on one, and a new window opens with a “column” view listing every folder and file you can access, which it sorts by size as you watch.

You then simply browse through the folders and files and delete the large ones which you are no longer using. If a file is part of the system, it'll say so on the panel (in the list of Packages the file belongs to), so you won't accidentally get rid of something that would make your system stop working. The free space on the disk and the ordering of the folders are automatically recalculated.


OmniDiskSweeper is freeware.

  • Looks like Baseline's dead :( Dec 26, 2014 at 21:06
  • 1
    DaisyDisk is a paid app — the answer fails to mention it.
    – ccpizza
    Sep 2, 2015 at 6:27
  • What Size Mac is another (paid) alternative whatsizemac.com
    – Bryce
    Sep 19, 2016 at 15:51

You want Disk Inventory X.

from the site:

The layout algorithm is based on KDirStat. The idea to develop this program came to me when a fellow of mine showed me his creation WinDirStat.

alt text

Disk Inventory X is freeware.

  • 1
    Disk Inventory X is very buggy on Mavericks and Yosemite, and the app appears to be abandoned. Source code is freely available but it has external dependencies so it's tricky to compile on your own. Not recommended unless you use a version of OSX for which it was originally compiled.
    – ccpizza
    Oct 22, 2015 at 18:44

GrandPerspective is an Open Source app that will do what you're asking.

alt text

  • mmmh, this one seems to show only "blocks" while I actually like to be able to navigate through folders and files.
    – damusnet
    Dec 21, 2009 at 19:17

JDiskReport is available as a JAR file. It will run anywhere that a JRE is installed, including your Mac.

alt text

  • JDiskReport is handy for any Java-capable OS
    – deddebme
    Dec 22, 2009 at 13:30

WhatSize ($13) and Baseline ($20) both show you a view of all folders sorted by size which you can drill down into (among other view options). It is a little hard to describe, but much more useful than the graphical view of many of the other apps that have been listed. Baseline has more features such as making snapshots of your disk usage to compare to your current usage, but it is the more expensive of the two.

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