Compare software

Folder SizeSpaceSniffer
Freemium

Free to use, with a paid registered edition available.

 Free

Freeware with donations welcomed. The source code is not published.

Windows Windows
  • Bar and pie charts of disk usage
  • Works on network shares and NAS devices
  • A treemap makes the biggest space consumers obvious at a glance
  • Drill down with one click, zoom with a double-click, filter by file type
  • Windows only
  • Some functions tied to the paid registered edition
  • Windows only
  • Closed source freeware
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked September 21, 2026

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