Joshua Koo (zz85)

Joshua Koo, publishing under the handle “zz85,” is an independent developer whose compact catalogue focuses on data-visualization utilities that turn abstract system metrics into intuitive, explorable pictures. His best-known title, Space Radar Electron, exemplifies this approach: the open-source tool ingests live disk-usage or memory-dump information and renders it through three interchangeable chart metaphors—Sunburst for concentric folder drilling, Treemap for proportional block comparison, and Flamegraph for hierarchical call-stack or file-size profiling. Analysts typically launch the app when a drive suddenly reports “full,” when build artifacts bloat a project, or when DevOps teams need a lightweight, cross-platform counterpart to heavier storage auditors. Because the interface is built with Electron, the same build runs identically on Windows, macOS, and Linux, making it convenient for mixed-environment offices or portable troubleshooting USB sticks. Color palettes and zoom depth adjust on the fly, so even multi-terabyte volumes can be navigated without preprocessing, while export options let engineers attach annotated screenshots to incident tickets. Despite its narrow scope, the program fills a recurring niche—quick, visual answers to “where did my space go?”—and has attracted contributors who extend parsers for cloud-storage sync folders, Docker overlayfs, and mobile-device backups. Joshua Koo’s Space Radar Electron is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always fetch the latest release, and can be queued alongside other applications for unattended batch installation.