Which fits your needs?
Disk Inventory X: Users interested in the classic treemap or its community successors.
DissectMac: People who want free inspection and optional paid app/leftover cleanup.
Features, pricing, and workflow
Scroll across to compare
| Feature | Disk Inventory X | DissectMac |
|---|---|---|
| Best fit | Users interested in the classic treemap or its community successors. | People who want free inspection and optional paid app/leftover cleanup. |
| Visualization | Treemap; features depend on X, Xs, or Y | Treemap and search |
| Platforms and requirements | Original X 1.3: macOS 10.13–10.15; Xs/Y requirements differ | macOS (Intel and Apple Silicon builds) |
| Pricing and editions | Original X is free under the GPL; Xs and Y are independent community projects. | Map, search, and monitor are free; Pro is listed at $12.99 once plus tax. |
| Open source | Yes | No |
| Native macOS UI | Yes | Yes |
| Cleanup workflow | Check the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract. | Pro moves selected files and app leftovers to Trash after review. |
| Reports and portability | Check export support in the exact X, Xs, or Y build. Retain its scan records separately; no direct import into NullDisk is documented. | The overview does not establish scan-report export. Preserve any app-removal decisions and rescan the same folders in NullDisk. |
Disk Inventory X: what stands out
A good fit for users interested in the classic treemap or its community successors.
Disk Inventory X: strengths
- Treemap visualization of disk usage
- Xs updates the original codebase for Apple Silicon
- Y is a separate Swift/SwiftUI rewrite
Considerations
- The original X, revival Xs, and rewrite Y are different apps
- Compatibility and features depend on the chosen build
- Check each project’s current release and signing instructions
DissectMac: what stands out
A good fit for people who want free inspection and optional paid app/leftover cleanup.
DissectMac: strengths
- Free map, file search, and live monitor
- Filters for developer files and large storage categories
- Pro uninstaller and app-leftover cleanup
Considerations
- In-app clearing and uninstallation require Pro
- Treemap is the documented graphical view
- Confirm suspected leftovers belong to apps you no longer need
For a useful comparison on your own drive, match the scan root, access permissions, and size mode. Chart style changes how you explore the results; it does not by itself establish measurement accuracy.
Common questions
When should I choose Disk Inventory X?
A good fit for users interested in the classic treemap or its community successors. Original X is free under the GPL; Xs and Y are independent community projects.
When should I choose DissectMac?
A good fit for people who want free inspection and optional paid app/leftover cleanup. Map, search, and monitor are free; Pro is listed at $12.99 once plus tax.
Will both apps show the same size?
Not necessarily. Match the scan root, permissions, exclusions, and logical/allocated-size mode. Hard links, APFS clones, snapshots, sparse files, and cloud placeholders can change totals. A reported size is not a guaranteed amount recovered after deletion.