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OpenDisk for Mac

A fast, free, and open-source disk space analyzer that maps your drive as an interactive sunburst chart.

By 137137137. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

OpenDisk at a glance

Version
1.2.8
Released
9 October 2026
Download size
4.1 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
Utilities
Developer
137137137
GitHub stars
297

About OpenDisk

Fast macOS disk-usage analyzer with an interactive sunburst chart — scans a full drive in seconds.

Screenshots

OpenDisk screenshot 1

How to install OpenDisk on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for OpenDisk and press Get. OpenDMG downloads version 1.2.8 from 137137137's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to OpenDisk show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: OpenDisk-1.2.8.zip (4.1 MB).

What is new in OpenDisk 1.2.8

Version 1.2.8.

- Free space is now shown as a gray wedge on the sunburst when viewing the whole disk, with used and free sizes in the center (#11)

**[Release notes](https://opendisk.app/release-notes/1.2.8)** · Notarized universal build (Apple Silicon + Intel).

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