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TreeSize Freegdu
Freemium

TreeSize Free is free for private and commercial use. TreeSize Personal, Professional and…

 Free

The open-source application is available without a license fee.

Windows Windows, macOS, Linux
  • Reads the NTFS master file table, so scans finish quickly
  • Folder tree sorted by size, updating while it scans
  • Interactive size inspection with parallel scans
  • Windows only and closed source
  • Duplicate search, reports and exports need a paid edition
  • Parallel scanning offers less benefit on mechanical disks.
Downloadable app Downloadable app
Closed source Open source
License not stated License: MIT
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 21, 2026

Checked September 22, 2026

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