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

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