A tool application that lets you understand how folders and files are structured on your disks.
Publisher’s description
What is SpaceSniffer?
SpaceSniffer is a free disk & usb tool program for Windows from UderzoSoftware.
Installation and requirements
Official installers exist for 64-bit as Portable. The main installer is 3.1 MB. It runs without installation (portable).
Updates and version history
The current version is 2.2.0.27, released on March 25, 2026. 4 versions are listed since December 29, 2022, each with links to its own installer files. That is about 1.2 releases a year.
Pros / Cons
Pros
- Free to use
- Portable: runs without installation
- Small download (3.1 MB)
Cons
- No native ARM64 build
In short: SpaceSniffer is a free disk & usb tool tool for 64-bit PCs.
Is SpaceSniffer safe to download?
- The file is served by uderzo.it; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
4FCAEC94E52B19D3A53350546879E9D9798AEB5515372B40E021754BF3145A19· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 4 versions ›4 versions over 3 years · about 1.2 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.2.0.27Latest | March 25, 2026 | 3.1 MB | 64-bit ZIP |
| 2.0.5.18 | October 13, 2025 | — | 64-bit ZIP |
| 2.0.3.12 | September 12, 2025 | — | 64-bit ZIP |
| 1.3.0.2 | December 29, 2022 | — | 32-bit ZIP |
Install from the command line
Silent install ›winget install --id UderzoSoftware.SpaceSniffer -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- UderzoSoftware
- Category
- Disk & USB tools
- Licence
- Freeware
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 2.2.0.27
- Released
- March 25, 2026
- Added to the catalogue
- December 29, 2022
- Versions listed
- 4
- Updates / year
- 1.2
- Downloads on ExeAtlas
- 3
- winget ID
- UderzoSoftware.SpaceSniffer
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to SpaceSniffer
See all ›-
Rufus4.15A utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.Open source840.1K ↓ -
Ventoy1.1.18Ventoy is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files.Open source206.5K ↓ -
unetbootin702UNetbootin allows you to create bootable Live USB drives for Ubuntu and other Linux distributions without burning a CD.Open source54.9K ↓ -
smartmontools7.5smartmontools contains utility programs (smartctl, smartd) to control/monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (S.M.A.R.T.) built into most modern ATA and SCSI disks. It is derived from smartsuite.Open source853.5K ↓ -
Open source284.7K ↓ -
Open source419.9K ↓ -
Open source602.1K ↓ -
Open source36.7K ↓
Frequently asked questions
Is SpaceSniffer free?
Yes. SpaceSniffer is free to use.
Is SpaceSniffer safe to download?
The download comes from uderzo.it; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install SpaceSniffer with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does SpaceSniffer run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of SpaceSniffer?
The versions page lists all 4 versions with links to their official installer files, back to December 29, 2022.
Can I use SpaceSniffer without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to SpaceSniffer?
Rufus, Ventoy, unetbootin, smartmontools and gdu. The alternatives page compares them.
