GrandPerspective vs WizTree
Side-by-side comparison of features, pricing, ratings, and alternatives.
GrandPerspective is a free macOS utility that scans a folder or volume and displays disk usage as a treemap, where each file is drawn as a rectangle sized proportionally to how much space it consumes. This makes it fast to spot the largest files and folders visually rather than digging through nested Finder windows. Released under the GNU General Public License, GrandPerspective supports multiple color-mapping schemes (by file type, size, or modification date), filtering and search, and can compare or combine multiple scans. It is distributed for free from SourceForge, with an optional paid copy on the Mac App Store for users who prefer automatic updates and app-review verification.
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 and open source under the GPL.
- Treemap view makes large files and folders obvious at a glance.
- Actively maintained with recent updates for current macOS releases.
- Lightweight, single-purpose tool with no bundled extras or ads.
- 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
- Interface is functional but visually dated compared to modern paid alternatives.
- macOS only, so it cannot help clean up drives on other operating systems.
- No automated cleanup actions; it only visualizes usage, deletion is manual.
- 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
More alternatives & similar tools
Alternatives to GrandPerspective
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Alternatives to WizTree
View all →Free, open-source treemap visualizer that shows exactly what is filling up your Mac's disk space.
The Verdict
AI-generated from listing dataGrandPerspective is a completely free, mac‑only visualizer that shows disk usage, while WizTree offers a freemium, Windows‑only tool with faster NTFS scans and built‑in file actions.
Key differences
- •Platform support: GrandPerspective runs on macOS only; WizTree runs on Windows only.
- •Scanning speed: WizTree reads the NTFS MFT for near‑instant full‑drive scans; GrandPerspective scans folders more slowly.
- •File actions: WizTree lets you delete, move, or open files from the treemap; GrandPerspective only visualizes.
- •Export options: Both export images/CSV, but WizTree also exports full scan results to CSV for analysis.
- •Pricing model: GrandPerspective is fully free open‑source; WizTree is freemium with a paid tier for advanced features.
Pricing & value
GrandPerspective is fully free and open source; WizTree’s free tier has no restrictions but the product is freemium.
Ease of use / learning curve
Both have utilitarian, dated interfaces; each presents an interactive treemap that is straightforward for basic users.
Features & depth
WizTree adds duplicate detection, direct file actions, and CSV export; GrandPerspective only visualizes and exports images or text.
Integrations & ecosystem
GrandPerspective is open source with no bundled extras, but has no integrations; WizTree also has none, so tie is not appropriate—GrandPerspective’s open‑source nature offers potential community extensions.
Support
GrandPerspective provides support via its SourceForge project page; WizTree offers no specified support options.
Security & privacy
Both run locally without cloud components; no information about data collection is provided for either.
Choose GrandPerspective if…
Mac users who need a free, open‑source visual disk‑usage tool and are comfortable manual cleanup.
Choose WizTree if…
Windows users, especially IT admins, who need rapid NTFS scans, duplicate detection, and in‑app file management.
Common questions
Can I use GrandPerspective on Windows?
No, it is macOS‑only.
Does WizTree require a paid license for full functionality?
No, the free tier includes all core features; paid version adds optional advanced capabilities.
Which tool can automatically delete files from the interface?
WizTree allows deletion, moving, or opening files directly; GrandPerspective only visualizes usage.