OwlDisk

Spec sheet

Purpose

OwlDisk is an open-source disk space analyzer for macOS that shows where storage is being used.Read 12 Oct 2026 · owldisk.com

Desktop platforms

macosRead 23 Sep 2026 · owldisk.com

Free plan

YesRead 23 Sep 2026 · owldisk.com

Privacy

The app runs entirely on the user's machine, and the site says no data leaves the computer.Read 12 Oct 2026 · owldisk.com

License

OwlDisk is released under the MIT License.Read 12 Oct 2026 · owldisk.com

Architecture

The site describes OwlDisk as a native macOS app with no Electron or web views.Read 12 Oct 2026 · owldisk.com

Cleanup

Users can drag files and folders to a trash zone to free space from within the app.Read 12 Oct 2026 · owldisk.com

Distribution

The project README says to download the latest DMG from its GitHub Releases page.Read 12 Oct 2026 · github.com

File navigation

Users can reveal a file in Finder from the app.Read 12 Oct 2026 · github.com

Minimum system

OwlDisk requires macOS 11 or later.Read 12 Oct 2026 · github.com

Permission requirement

Full Disk Access is recommended for accurate scan results, and the app warns when permissions limit accuracy.Read 12 Oct 2026 · github.com

Processor support

The universal binary supports both Apple Silicon and Intel Macs.Read 12 Oct 2026 · owldisk.com

Scan scope

files_foldersRead 23 Sep 2026 · owldisk.com

Scanning

It uses 64 concurrent goroutines to scan disks, and the site says it can scan a full 500 GB disk in seconds.Read 12 Oct 2026 · owldisk.com

Size accuracy

It reports sizes matching macOS Finder and About This Mac, including purgeable space.Read 12 Oct 2026 · owldisk.com

Treemap view

NoRead 23 Sep 2026 · owldisk.com

Visualization

An interactive sunburst chart shows three levels of directory depth and lets users drill down by clicking.Read 12 Oct 2026 · owldisk.com

Plans and prices

Every OwlDisk plan and price →

Where Specifiction places it

• Disk Space Analyzers#71 of 1057.6