A portable Windows disk-usage analyzer with a nested treemap, filters and text-report features.
Free
GrandPerspective
A native macOS disk-usage analyzer that displays file and folder sizes in a treemap.
About GrandPerspective
GrandPerspective is a small macOS utility that shows how disk space is used within a file system. It draws a treemap in which each file is a rectangle sized in proportion to the file's size, with files in the same folder grouped together, so the largest files and folders are easy to spot.
The app can be configured to show files, packages and files, or packages and folders. Files can be colored by name, extension, file type, size, dates, or folder level, and the user can view the entire volume. Items can be opened or revealed in Finder and previewed with Quick Look, and navigation works with either the mouse or the keyboard. The source lists the app as free to download from SourceForge. The same app is also offered on the App Store for $2.99. Recent release notes state that the current version targets macOS 14.
Key features
- Treemap display where each file's rectangle area is proportional to its size
- Configurable views showing files, packages with files, or packages with folders
- Color mapping by name, extension, file type, size, dates, or folder level
- Option to view the entire volume
- Open, reveal in Finder, and preview files and folders with Quick Look
- Navigation up and down the folder hierarchy using mouse or keyboard
Best for: Mac users who want to see which files and folders take up the most disk space.
Good for
- Open source and available free of charge from SourceForge
- Treemap view makes large files and folders easy to identify at a glance
Watch out for
- The App Store version is listed at $2.99
- Recent releases target macOS 14, so older systems may not be supported
GrandPerspective at a glance
- Category
- Software & Utilities › System Utilities
- Type
- Online tool
- Pricing
- Free
- Open source
- Yes
- Last checked
- Oct 9, 2026 · Online when checked
- Listed
- Oct 9, 2026
GrandPerspective alternatives
Tools and sites you could use instead, ranked by how closely they match.
GNOME’s Disk Usage Analyzer, also called Baobab, shows folder usage in a tree and graphical views.
FreeOpen source
Popular in System Utilities
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GrandPerspective FAQ
Is the App Store version different from the SourceForge download?
According to the homepage, you get the same app either way. The App Store version has passed Apple's review and quality control, receives automatic updates, and helps cover distribution costs and further development.
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