Feature comparison

Disk Inventory X vs Nektony Disk Space Analyzer

A classic treemap with separate Apple Silicon revival and Swift rewrite projects. A sunburst analyzer for large files, folders, and mounted storage. See how their platforms, views, and cleanup workflows fit the way you work.

Treemap / SunburstOpen source / Freemium

Which fits your needs?

Disk Inventory X: Users interested in the classic treemap or its community successors.

Nektony Disk Space Analyzer: Mac users who want a sunburst and integrated file-management actions.

Features, pricing, and workflow

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FeatureDisk Inventory XNektony Disk Space Analyzer
Best fitUsers interested in the classic treemap or its community successors.Mac users who want a sunburst and integrated file-management actions.
VisualizationTreemap; features depend on X, Xs, or YSunburst, directories, and largest-items list
Platforms and requirementsOriginal X 1.3: macOS 10.13–10.15; Xs/Y requirements differmacOS
Pricing and editionsOriginal X is free under the GPL; Xs and Y are independent community projects.Free download; verify the selected store edition and its in-app purchase terms.
Open sourceYesNo
Native macOS UIYesYes
Cleanup workflowCheck the selected project’s manual; X, Xs, and Y do not share a guaranteed cleanup contract.Manage selected items with copy, move, and removal actions; check edition-specific availability.
Reports and portabilityCheck 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 a portable report format. Keep paths and the selected scan scope before comparing results 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

Full product guide → · Alternatives →

Nektony Disk Space Analyzer: what stands out

A good fit for Mac users who want a sunburst and integrated file-management actions.

Nektony Disk Space Analyzer: strengths

  • Sunburst and largest-items browsing
  • Copy, move, or remove selected files
  • Supports external volumes and accessible cloud-storage folders

Considerations

  • Standard and Pro have separate store listings
  • Check which actions require a purchase in the selected edition
  • Mounted cloud folders do not necessarily represent an entire provider account

Full product guide → · Alternatives →

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 Nektony Disk Space Analyzer?

A good fit for Mac users who want a sunburst and integrated file-management actions. Free download; verify the selected store edition and its in-app purchase terms.

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.

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