Which fits your needs?
Disk Inventory X: Users interested in the classic treemap or its community successors.
JDiskReport: Users who want cross-platform disk statistics and already use Java.
Features, pricing, and workflow
Scroll across to compare
| Feature | Disk Inventory X | JDiskReport |
|---|---|---|
| Best fit | Users interested in the classic treemap or its community successors. | Users who want cross-platform disk statistics and already use Java. |
| Visualization | Treemap; features depend on X, Xs, or Y | Overview statistics charts and detail tables |
| Platforms and requirements | Original X 1.3: macOS 10.13–10.15; Xs/Y requirements differ | macOS, Windows, Linux (Java) |
| Pricing and editions | Original X is free under the GPL; Xs and Y are independent community projects. | No-charge, ad-free freeware; this does not mean open source. |
| Open source | Yes | No |
| Native macOS UI | Yes | Cross-platform interface |
| Cleanup workflow | Check the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract. | Use the statistics to guide file review; the cited overview does not specify removal semantics. |
| 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. | Preserve any saved scan files supported by your version and keep important table entries. NullDisk does not import JDiskReport scan files. |
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
JDiskReport: what stands out
A good fit for users who want cross-platform disk statistics and already use Java.
JDiskReport: strengths
- Disk usage statistics in charts and tables
- Runs across Java-capable desktop systems
- Free without ads or expiry
Considerations
- Requires a compatible Java runtime
- Freeware rather than an open-source project
- Check the manual for report storage and file-management actions
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 JDiskReport?
A good fit for users who want cross-platform disk statistics and already use Java. No-charge, ad-free freeware; this does not mean open source.
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.