Compare software

Folder Size vs Filelight: catalog facts
Folder Size	Filelight
Freemium Free to use, with a paid registered edition available.	Free Free and open source under the GPL.
Windows	Windows, Linux
Bar and pie charts of disk usage Works on network shares and NAS devices	The ring chart makes the biggest space consumers immediately obvious Scans remote and network locations as well as local disks
Windows only Some functions tied to the paid registered edition	Pulls in KDE libraries on non-KDE desktops
Downloadable app	Downloadable app
Closed source	Open source
License not stated	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 October 1, 2026	Official website Full listing and sources Checked September 22, 2026

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