Drive Atlas vs OmniDiskSweeper

Drive Atlas catalogs drives so users can search for files even when the drive containing them is unplugged. Search by file name, project, or date range, then see which drive holds a file and where that drive is located. A treemap shows drive contents, including offline drives. The app can find files that exist in only one place, verify backup copies by hashing both sides, and check duplicate groups byte for byte before moving selected copies to the Recycle Bin. Drive health tools benchmark drives over time and can list unique files on a failing drive for evacuation. It also analyzes numbered image sequences for timelapse interval and steadiness, and creates printable QR labels with drive summaries. The maker says the app makes zero network connections and does not interpret image content or use AI. Drive Atlas runs on Windows and Linux. The free plan covers the first two drives and includes all features, with no card or timer; the one-time license is 20.00 USD for all drives.

OmniDiskSweeper is a free macOS utility that displays files on a drive from largest to smallest. This ordering helps users locate large unwanted files, open them, or remove them. Moving items to the Trash is the default action; holding the Option key enables direct deletion instead. The utility can scan external drives. Omni says the version compatible with macOS 26 makes the entire app accessible with VoiceOver, and the product page lists older downloads for macOS 10.4 through 10.13. The freeware download requires no form or personal information. Omni says it does not share data gathered from its apps or websites with social media or advertising services. Support is available by email and phone Monday through Friday, 10am–5pm Pacific Time. The company notes that OmniDiskSweeper is updated less frequently than its other titles, although it still receives updates. The Omni Group is employee-owned and based in Seattle, Washington.