TreeSize Free vs WizTree
Side-by-side comparison of features, pricing, ratings, and alternatives.
TreeSize Free, by JAM Software, is a free disk space analyzer for Windows that shows which folders and files are consuming storage. It presents a treemap visualization of disk usage and can generate PDF reports, making it easy to spot what is taking up space on a drive.
WizTree is a free disk space analyzer for Windows built by Antibody Software that scans entire hard drives in seconds by reading the NTFS Master File Table directly instead of walking the file system folder by folder. It renders results as an interactive treemap so users can visually spot the largest files and folders on a drive at a glance, then delete or move them without digging through Explorer. Beyond the core treemap view, WizTree includes a duplicate file finder, CSV export for reporting, and support for non-NTFS and network drives via a slower standard scan. The free version is for personal use only; commercial users need a Supporter license priced by organization size, or an Enterprise license for unlimited use across a company.
- Completely free for personal use
- Fast scanning even on large drives
- Visual treemap makes large folders easy to spot at a glance
- No cloud connection required, data stays local
- Extremely fast full-drive scans compared to folder-by-folder tools
- Free for personal use with no feature restrictions
- Simple, information-dense treemap makes big space hogs easy to spot
- Lightweight, portable executable with no heavy installation
- Free edition is licensed for non-commercial use only
- Not compatible with Windows Servers, unlike the paid Professional edition
- Lacks advanced features like duplicate detection found in the paid version
- Windows only, no Mac or Linux version
- Fastest scanning requires NTFS; other file systems and network drives scan much slower
- Interface is utilitarian and dated compared to modern apps
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The Verdict
AI-generated from listing dataBoth tools are free for personal Windows use, but TreeSize offers a simpler visual scan while WizTree adds speed, duplicate detection, and file‑action features.
Key differences
- •WizTree reads the NTFS MFT for ultra‑fast scans; TreeSize scans folder‑by‑folder.
- •WizTree can find and delete duplicate files; TreeSize does not.
- •WizTree exports results to CSV and lets you delete/move files from the UI; TreeSize only generates PDF reports.
- •TreeSize is limited to non‑commercial personal use; WizTree’s free tier has no stated commercial restriction.
- •TreeSize runs only on Windows desktops; WizTree also supports non‑NTFS drives and network shares (though slower).
Pricing & value
Both are free for personal use, but WizTree’s free tier has no feature caps, giving more value.
Ease of use / learning curve
TreeSize’s straightforward UI and treemap make it slightly easier for casual users.
Features & depth
WizTree adds duplicate detection, CSV export, and in‑app file actions that TreeSize lacks.
Integrations & ecosystem
Neither product lists integrations; both are standalone desktop apps.
Scalability
Both run only on Windows desktops; TreeSize cannot run on servers, WizTree can scan network shares but slower.
Choose TreeSize Free if…
Personal Windows users who just need a quick visual view of disk usage without extra features.
Choose WizTree if…
Power users or IT admins needing fast NTFS scans, duplicate detection, and file‑action/export capabilities.
Common questions
Is there any cost for commercial use?
TreeSize Free is licensed for non‑commercial personal use only; WizTree’s free tier does not specify a commercial restriction.
Can the tools find duplicate files?
WizTree includes duplicate detection; TreeSize Free does not.
How fast are the scans on NTFS drives?
WizTree reads the NTFS Master File Table directly and scans an entire drive in seconds; TreeSize scans folder‑by‑folder and is slower.