Kugelblitz is a Mac application that renders the Earth — and its planetary neighbors — as a 3D globe and flyable atlas. Imagery, road maps, and topographic maps drape over real terrain with 3D buildings, and you navigate the whole thing like a pilot using keyboard, trackpad, mouse, or a 3Dconnexion SpaceMouse. The entire data pipeline draws from freely available geodata, published straight from its sources. No account creation, no login walls. The OpenStreetMap integration is the quiet centerpiece. Kugelblitz runs its own tile server, streaming the whole planet in tiles sized to your viewport and zoom level. No region downloads, no bulk data management. You see an area, it loads. This is a meaningful architectural choice: it sidesteps the friction of most OSM-based tools, which typically require you to download regional extracts or rely on third-party tile providers with their own rate limits and terms. Beyond the base maps, the Library feature opens directories and geoportals from around the world — aerial and satellite imagery, elevation models, 3D buildings — which you can preview instantly on the globe or pin to your saved places. Every data source is listed with its license in a dedicated "Sources and Licenses" panel, which is the kind of transparency most mapping apps quietly skip. The atlas mode flattens any celestial body into five map projections, from full-sheet to fine detail. An events layer computes eclipses over 5,000 years and overlays earthquakes, eruptions, tsunamis, and fireballs at their place and time. A time shuttle lets you scrub through history and watch events appear and vanish. The eclipse computation is done mathematically rather than read from tables, a detail that matters for accuracy at the extremes of the 5,000-year range. Performance claims are specific and testable: the developer built and benchmarked on a Mac mini with M1 and 16 GB RAM, and says the flight stays smooth with aerial imagery, terrain, buildings, roads, and labels all rendering simultaneously. Vision Pro support works by streaming the globe from the Mac to the headset — no headset-side app required, also from an M1. The developer notes this was verified with Mac and headset on February 27. Caching is local and shareable. Everything loaded stays in cache, and Kugelblitz instances on the same network can share their caches. Status windows report loading progress, your current view coordinates, and the provenance of every tile on screen. The app speaks German and English, with user-selectable units. This is a niche tool with a clear philosophy: open data, no accounts, no third-party dependencies beyond the data publishers themselves, and an obsessive focus on making geodata tangible rather than abstract. It is not competing with Google Earth on breadth of street-level imagery or social features. It is competing on sovereignty over your own data pipeline and on the tactile pleasure of flying over real terrain with real maps.
