SpaceSniffer review (2026): is it any good?
Free portable treemap tool that shows what fills a Windows disk
SpaceSniffer report card
Good · out of 4.0 · graded Nov 13, 2026
Best for seeing what fills a Windows disk
SpaceSniffer draws your drive as a treemap so you can see which folders are big, and it is free for personal and commercial use. But it reports only, with no cleanup tools of its own, and the vendor's pages list no system requirements.
Who SpaceSniffer is for
- Fits if you want to see at a glance which folders are using your disk
- Works for people who prefer a portable program with typed filters
Who SpaceSniffer is not for
- Skip it if you use a Mac or Linux, as no other platform is named
- Too light for you if you want it to clean up junk, since it only reports
- Watch out: the site lists no system requirements
- Watch out: downloads are linked through a mirror called dAppCDN, not hosted on the vendor's own page
Why SpaceSniffer gets a 2.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyFree for personal and commercial use. Donations are welcome but not required.
- AFree plan and trialThe whole program is free, with no limit or trial.
- CFeaturesA treemap, filters, color tags, live scanning and text exports. It does that job fully, but it is a smaller one: no cleanup or deletion beyond the Windows file menu.
- BEase of usePick a drive and the map appears. No store rating is on record.
- DPlatforms and integrationsThe context menu support points to Windows, and no other platform is named.
What these grades rest on. Graded from this listing, whose facts were read from Uderzo Software's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make SpaceSniffer? Put this grade on your site
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<a href="https://toolgpa.com/tools/spacesniffer#review"><img src="https://toolgpa.com/badge/spacesniffer.svg" alt="SpaceSniffer: 2.8 GPA on ToolGPA" width="196" height="56"></a>Where SpaceSniffer stands among desktop utilities
SpaceSniffer's GPA of 2.8 is higher than 116 of the 186 other desktop utilities we grade, and level with 37.
It stands best on free plan and trial (A, above 107 of 186) and worst on platforms and integrations (D, above 0).
SpaceSniffer has no paid plan.
On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 187 desktop utilities we grade, cut by the letter each got. SpaceSniffer’s own letter is outlined.
- AValue for moneyAbove 55 of 186, level with 131
- AFree plan and trialAbove 107 of 186, level with 79
- CFeaturesAbove 2 of 186, level with 110
- BEase of useAbove 78 of 186, level with 108
- DPlatforms and integrationsAbove 0 of 186, level with 110
Price against what you get
Each dot is one of 103 desktop utilities. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep SpaceSniffer, or make your own?
Keep it
SpaceSniffer is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces.
What you could not
- Deleting system files without breaking anything.
- A file manager working directly on your disk.
- A real app for Windows. Something home-made would be a web page.
What this rests on. SpaceSniffer’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is SpaceSniffer?
SpaceSniffer is a free, portable disk-space analyzer. It draws the folders and files on a drive as a treemap, where bigger blocks are bigger items, and lets you click or zoom into any block for detail. Typed filters limit the view by file type, size, age or color tag, and an export module writes text reports.
Worth knowing
- It analyzes and reports; the vendor's pages describe no cleanup or deletion tools beyond the Windows file menu.
- The vendor's pages are short and the site lists no system requirements; the Windows context menu support points to Windows only.
- Downloads are linked through a mirror called dAppCDN rather than hosted on the vendor's own page.
Key features
- Treemap view
- Folders and files appear as blocks sized by how much space they use. One click opens a block for detail and a double click zooms to it.
- Filter field
- Type criteria such as *.jpg, >2years or a color tag to limit the view; a leading pipe excludes matches. Filters can be combined.
- Color tags
- Mark files red, yellow, green or blue with keyboard shortcuts to keep track of what was examined, and filter by tag.
- Live scanning
- You can navigate while the scan runs, and the view updates if the file system changes during a scan.
- Export module
- Produces text reports of the result, and the layout of the report can be customized.
SpaceSniffer pricing
As of Nov 13, 2026, SpaceSniffer is free to use.
- Starts at
- Free
- Free plan
- Free for personal and commercial use. The vendor welcomes donations but does not require them.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| SpaceSniffer | $0 | Freeware for personal and commercial use; donations are optional. |
Read from uderzo.it on Nov 13, 2026. Prices change, so confirm with SpaceSniffer before you buy.
SpaceSniffer alternatives
- SpaceSniffer vs WizTree
Free plan · from $25 one-time
- SpaceSniffer vs TreeSize
Free plan
- SpaceSniffer vs DaisyDisk
Free trial · from $9.99 one-time
Common questions
Does SpaceSniffer have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. SpaceSniffer is listed for Windows.
Does SpaceSniffer have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. SpaceSniffer is listed for Windows.
Is SpaceSniffer open source?
SpaceSniffer is not described as open source on its own site, as read on Nov 13, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.