Space Radar is described as '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' and is a disk usage analyzer in the system & hardware category. There are more than 50 alternatives to Space Radar for a variety of platforms, including Windows, Mac, Linux, BSD and Flathub apps. The best Space Radar alternative is WinDirStat, which is both free and Open Source. Other great apps like Space Radar are WizTree, Baobab Disk Usage Analyzer, TreeSize and SquirrelDisk.