Space Radar
9 likes
Features
Properties
- Lightweight
- Privacy focused
Features
- Electron based
- Ad-free
- HDD Visualization
- Built-in File Manager
- Portable
- Works Offline
- No Tracking
- No registration required
Tags
- Hard Disk Utility
- disk-usage-visualizer
Space Radar News & Activities
Highlights All activities
Recent News
No news, maybe you know any news worth sharing?
Share a News TipRecent activities
mukulmehra added Space Radar as alternative to KlarityDisk- gwrvan-barre reviewed Space Radar
The best Disk Usage Analyzer for Windows, Mac and Linux 🏆 ! It is extremely fast on my low quality computer 🚀. The UI is good compared to other softwares 👍. It's my favorite Disk Usage Analyzer 🤩.
- gwrvan-barre liked Space Radar
- gwrvan-barre updated Space Radar
TheEmperorArt added Space Radar as alternative to Glary Disk Explorer
BarnMTB added Space Radar as alternative to TreeMap- K0RR added Space Radar as alternative to dutree
POX added Space Radar as alternative to DiskPoint
Featured in Lists
## THIS LIST HAS BEEN DELETED DUE TO A BUG, SO IT MISSES SOME HONORABLE MENTIONS ! This is the apps for macOS that I …
List by Darlene Sonalder with 113 apps, updated
What is Space Radar?
Space Radar is a disk and memory space visualization app built with 
Electron and 
D3.js. It currently supports Sunburst, Treemap, and Flamegraph charts and is available for Mac and Windows.
FEATURES
- space visualizations using sunburst and treemap charts
- previews visualization as disk is being scanned
- fast (completes disk scanner faster than du)
- cross platform (at least on Mac OS X and Windows)
- allow drilldown of directories
- breadcrumbs and navigation
- opens files and directories
- analyze disk contents from a remote server (see section Reading from a file)
Space Radar information
Developed by
Joshua KooLicensing
Open Source (MIT) and Free product.Written in
Rating
Average rating of 3.8Alternatives
85 alternatives listedSupported Languages
- English
AlternativeTo Categories
System & Hardware, File Management, OS & UtilitiesGitHub repository
- 1,426 Stars
- 81 Forks
- 10 Open Issues
- Updated
Comments and Reviews
The best Disk Usage Analyzer for Windows, Mac and Linux 🏆 ! It is extremely fast on my low quality computer 🚀. The UI is good compared to other softwares 👍. It's my favorite Disk Usage Analyzer 🤩.
It does not give accurate directory sizes. I have a "~/Library/Containers/com.docker.docker/" directory that only contained about 360 KB on disk. However, Space Radar reports it as being 59.6 GB.
On Windows the size reported is a little off from real size but not that much. I experienced this very issue with other softwares (those that cannot distinguish symlinks from real files) but not this one.
Works well on Windows despite not being maintained. It is the most similar app compared to all other opensource alternatives to SpaceSniffer, the visualization is very similar (when the rectangle vis is selected). It freezes when switching to other visualizations but it works fine otherwise. Note that the sizes reported are slightly off by a few percent compared to the ground truth (eg, instead of 62GB, a folder will be reported as being 60GB), it's not a deal breaker but it's something worth noting. The only totally working and accurate alternative I found is WinDirStats, but Space Radar has the big advantage of being cross-platform (which may explain why it is less accurate, it uses less specific hooks to query files and folders sizes). But it seems to be able to differenciate NTFS symlinks from real files so it does not show redundant calculations. Overall, I am very satisfied by this app, I will reuse it.
There is a new version 🥳 ! (2026) https://github.com/zz85/space-radar/releases/tag/v6.0.0
i like space radar because itslight, portable, free
Free, performant, and lets me see visually where my hard drive space is taken up. Could be faster, but not too bad for a free tool.
I have not tested the old versions but version 6 (2026) is extremely fast on my low quality laptop.