agedu vs Drive Atlas

agedu is a free, MIT-licensed Unix utility that scans directory trees and relates disk usage to file access times. It helps locate large data that has gone unused, but it cannot decide whether a file is safe to delete. It produces text and HTML reports, or can serve navigable HTML reports through a small built-in web server. In HTML reports, colours distinguish disused data in red from recently accessed data in green. Text reports can be limited to files not accessed within a chosen age, such as six months. Scan settings can cross filesystem boundaries and include, exclude, or prune files and directories. Results can be written as text on one machine and loaded into an index on another, including across different CPU architectures. Index files use restrictive permissions because they may reveal confidential filesystem information. By default, the built-in server uses Linux user-based access checks or HTTP Basic authentication with an invented password when those checks are unavailable. CGI mode has no access control of its own. There is no native Windows port, though a separate Windows scan utility can create a dump for loading into agedu on Unix.

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.