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DiskMap

Free#20 of 104 in Disk Space Analyzers

DiskMap: A free Windows analyzer for detailed filesystem scans, visual reports, duplicates, and cleanup. Ranked #20 of 104 in Disk Space Analyzers by our editors (6.8/10); pricing: Free plan; best for windows users wanting filesystem-level detail.

6.8/10Editor score

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DiskMap6.8 Visit DiskMap

At a glance

Editor score
6.8 / 10
Pricing
Free plan
Best for
Windows users wanting filesystem-level detail
Free plan
Yes
Paid from
Free
Desktop platforms
windows
Facts checked
22 Sep 2026

Where it wins
- NTFS MFT scanning exposes detailed filesystem information
- Treemap and sunburst views make storage patterns easier to inspect
- Includes duplicate detection, history comparison, and cleanup tools
Where it doesn't
- Runs only on Windows
- Does not provide an application-size view
- Source code is proprietary rather than open source

Our verdict on DiskMap

DiskMap is a free Windows desktop disk-usage analyzer for locating where local storage is being used. It scans files and folders with recursive or direct NTFS Master File Table engines, then presents results through file trees, treemaps, and sunburst visualizations. File-type coloring, filtering, and grouping help organize findings, while duplicate detection adds a practical way to identify repeated content. Because it runs locally without an account, cloud service, or telemetry, it suits Windows users who want filesystem-level inspection on their own machine.

Its strongest advantage is the depth of its storage analysis. Advanced filesystem details include hard links and alternate data streams, while scan history and snapshot comparison support checking how storage changes over time. Crash-safe scan resume and memory-saving options are useful for larger scans or interruptions. The combination of NTFS-focused engines, visual views, file-type breakdowns, and filtering gives DiskMap a broader analysis toolkit than a basic folder-size viewer.

DiskMap also includes built-in cleanup for temporary files, caches, reports, and Recycle Bin items, keeping inspection and removal in one application. Its main boundary is platform scope: it is designed for Windows rather than cross-platform use. It also does not provide an application-size view, and its proprietary source means it is not an open-source option. Choose DiskMap for free, local Windows analysis with detailed filesystem features; choose an alternative if you need macOS or Linux support, application-level size reporting, or open-source code.

Your product? Our editors can test DiskMap in depth and publish a review, labelled as paid · from $149/mo →

DiskMap pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

DiskMap fact sheet

Free plan	Yes
Paid from	Free
Desktop platforms	windows
Treemap view	Yes
Application sizes	No
File-type breakdown	Yes
External drive scans	Not verified
Exportable reports	Not verified
Scan scope	Files_folders
Deployment	Desktop
Platforms	Windows
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	github.com
Facts checked	22 Sep 2026

Alternatives to DiskMap

See all DiskMap alternatives →

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Featured on iTechGuides

DiskMap is listed in our Disk Space Analyzers directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update