Space Radar
10 likes
SpaceRadar allows interactive visualization of disk space and memory. It currently supports Sunburst, Treemap, and Flamegraph charts.
Features
Properties
- Lightweight
- Privacy focused
Features
- Electron based
- Ad-free
- HDD Visualization
- Built-in File Manager
- Portable
- Works Offline
- No Tracking
- No registration required
- Fast speed
- Sunburst chart
Space Radar News & Activities
Highlights All activities
Recent News
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- gwrvan-barre updated Space Radar
- lstar1990 liked Space Radar
Kapil_DissectMac added Space Radar as alternative to DissectMac
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
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What is Space Radar?
SpaceRadar allows interactive visualization of disk space and memory. It currently supports Sunburst, Treemap, and Flamegraph charts.
Features :
- Space visualizations using sunburst, treemap, and flamegraph charts
- Previews visualization as disk is being scanned
- Fast scanning (completes faster than du)
- Cross platform (macOS, Windows, Linux)
- Apple Silicon native support (arm64)
- Cancel and pause/resume scanning
- Free space visualization
- Directory drilldown with breadcrumbs and navigation
- Opens files and directories in system file manager
- Analyze disk contents from a remote server (see Reading from a file)
- Memory usage breakdown (cross-platform)
- Auto-updates
Space Radar information
Developed by
Joshua Koo Licensing
Open Source (MIT) and Free product.Written in
Rating
Average rating of 3.8Alternatives
86 alternatives listedSupported Languages
- English
AlternativeTo Categories
OS & Utilities, System & Hardware, File ManagementGitHub repository
- 1,435 Stars
- 83 Forks
- 9 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.