# SpaceSniffer review (2026): is it any good? > Free portable treemap tool that shows what fills a Windows disk Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. 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. - **Category:** Desktop Utilities - **Made by:** Uderzo Software - **Website:** https://www.uderzo.it/main_products/space_sniffer/ - **Runs on:** Windows - **Who should skip it:** Skip it if you use a Mac or Linux, as no other platform is named. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, SpaceSniffer is free to use. - **Pricing model:** 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 https://www.uderzo.it/main_products/space_sniffer/donate.html on Nov 13, 2026. Prices change, so confirm with SpaceSniffer before buying. ## 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. ## Good for - Finding which folders or files fill up a drive - Anyone who wants a portable tool with no installation - Quick checks of old or oversized files by filter ## 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. ## ToolGPA grades **GPA: 2.8 out of 4**, graded Nov 13, 2026. 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. - **Value for money: A.** Free for personal and commercial use. Donations are welcome but not required. - **Free plan and trial: A.** The whole program is free, with no limit or trial. - **Features: C.** A 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. - **Ease of use: B.** Pick a drive and the map appears. No store rating is on record. - **Platforms and integrations: D.** The context menu support points to Windows, and no other platform is named. These are ToolGPA's own grades. 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. ## Where it 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. The category's chart of price against score: https://toolgpa.com/charts/utilities ## Keep it, 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. - You could not: Deleting system files without breaking anything. - You could not: A file manager working directly on your disk. - You could not: A real app for Windows. Something home-made would be a web page. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. **Tags:** Disk cleanup, File management ## Alternatives - [WizTree](https://toolgpa.com/tools/wiztree): Fast disk space analyzer for Windows and macOS. [Compare](https://toolgpa.com/compare/spacesniffer-vs-wiztree) - [WinDirStat](https://toolgpa.com/tools/windirstat): Free, open-source disk usage analyzer for Windows. [Compare](https://toolgpa.com/compare/spacesniffer-vs-windirstat) - [TreeSize](https://toolgpa.com/tools/treesize): Windows disk space analyzer with reports and cleanup tools. [Compare](https://toolgpa.com/compare/spacesniffer-vs-treesize) - [DaisyDisk](https://toolgpa.com/tools/daisydisk): Visual disk space analyzer and cleanup tool for Mac. [Compare](https://toolgpa.com/compare/daisydisk-vs-spacesniffer) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://www.uderzo.it/main_products/space_sniffer/ - https://www.uderzo.it/main_products/space_sniffer/features.html - https://www.uderzo.it/main_products/space_sniffer/download.html - https://www.uderzo.it/main_products/space_sniffer/donate.html Page: https://toolgpa.com/tools/spacesniffer Listed by ToolGPA (toolgpa.com).