Side by side
Disk Auditor vs OmniDiskSweeper
Both stand on disk space analyzers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Choose Disk Auditor if you want a free Windows tool for exploring disk usage, comparing directories, or checking duplicate files. Its portable executable avoids installation, and its exports support several common formats. Look elsewhere if you need a platform other than Windows or require a code-signed application.
Visit Disk Auditor
Choose OmniDiskSweeper if you want a free Mac utility for locating large files on internal or external drives, with the option to open items or remove them. Its size-ordered view and VoiceOver accessibility are useful considerations. Look elsewhere if you need a platform other than macOS.
Visit OmniDiskSweeperThe facts
| Disk Auditor | OmniDiskSweeper | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Windows | Mac |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | diskauditor.com | omnigroup.com |
| On disk space analyzers | #25 of 105 | #21 of 105 |
Disk Auditor: what it does well
- Free forever, with a portable single-executable download.
- Treemap and sunburst views show disk usage and directory depth.
- Search filters include patterns, extensions, sizes, and dates.
- Compares two directories and identifies unique or changed files.
- Exports results in five formats, including Excel and JSON.
What to know first
- Requires Windows 10 or later on x64.
- The application is not code-signed, and SmartScreen may warn on first launch.
OmniDiskSweeper: what it does well
- Free macOS utility with no download form or personal information required.
- Lists drive contents from largest to smallest.
- Can scan external drives.
- Trash is the default; Option allows direct deletion.
- macOS 26-compatible update makes the app accessible with VoiceOver.
What to know first
- Available for macOS only.
- Omni says it is updated less frequently than its other titles.
Alternatives to Disk Auditor Alternatives to OmniDiskSweeper The whole list