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QDirStat vs Filelight: catalog facts
QDirStat	Filelight
Free Free and open source under the GPL version 2.	Free Free and open source under the GPL.
macOS, Linux	Windows, Linux
Treemap plus tree view of disk usage No KDE dependencies	The ring chart makes the biggest space consumers immediately obvious Scans remote and network locations as well as local disks
No Windows version Interface is dense for casual users	Pulls in KDE libraries on non-KDE desktops
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.