GeoLibre Puts a Whole GIS Stack in the Browser on DuckDB-WASM

GeoLibre gained roughly 600 stars in a day — about a 21% single-day jump, the steepest relative growth on GitHub Trending — for an MIT-licensed cloud-native GIS platform that runs in the browser, on desktop via Tauri v2, on Android, and inside Jupyter notebooks. The stack is React, TypeScript, MapLibre GL JS, deck.gl and DuckDB-WASM Spatial, which is what makes the interesting claim possible: spatial SQL executes entirely client-side, so restricted datasets never leave the machine. It also does 3D Tiles, time-series animation and planetary mapping for the Moon and Mars. Worth taking seriously because of who maintains it — the opengeos organization behind leafmap and geemap, with an established track record in open geospatial tooling and a Zenodo DOI for academic citation. It is two months old with a small core team, so treat it as excellent for research and internal tooling rather than mission-critical work.