Build maps, manage data, automate pipelines — all in the open.
Open data services that anything on the map can build on.
| Service | Description | Source |
|---|---|---|
| Re:Earth Terrain | Open terrain tiles for 3D globes | reearth-terrain |
| Re:Earth Buildings | Overture Maps → 3D Tiles 1.1, served from Cloudflare Workers | reearth-buildings |
| Re:Earth Papers | A tile service for beautiful, openly-licensed maps of the world | reearth-papers |
The pieces we built along the way — each usable entirely on its own.
Rendering & maps
| resium | React components for 🌏 Cesium |
| ezu | Painterly cartography — render vector tiles as watercolor, ink wash or pencil sketch on a GPU-free CPU renderer |
| hokusai | Pure-Rust brush engine inspired by libmypaint, WASM-ready with .myb compatibility |
Geospatial data
| terrain-codec | RTIN mesh, Cesium quantized-mesh codec and ECEF transforms for Rust |
| draco-oxide | Rust crate for the Google Draco mesh compression library |
| kenro | SpatiaLite-style spatial SQL for SQLite in pure Rust — PostGIS-compatible ST_ functions, GeoPackage R-tree, CRS transform, H3, MVT |
| flatgeobuf-overviews | Scale-optimized, fgb-compatible vector format for fast on-demand MVT tiles from one static file |
| maplibre-expr-rs | Pure-Rust parser and evaluator for MapLibre GL style expressions |
Platform
| ygo | A pure-Go, production-grade implementation of Yjs — a Hocuspocus-compatible websocket server with versioned persistence |
| quickjs-emscripten-sync | Sync objects between the browser and QuickJS |
| zushi | A framework-agnostic browser plugin runtime — untrusted code in an isolated WASM backend, UI in sandboxed iframes |
| mongogit | Git-style versioned documents for MongoDB, in Go |
| fastxml | A fast, memory-efficient XML library for Rust with XPath and schema validation |
Ask questions, share what you built, or just say hi.
- 💬 Discord — chat with users and maintainers
- 📖 Documentation · Developer docs — guides, APIs and plugin development
- 📣 X · YouTube — releases, demos and talks
- 📈 Status — uptime for our hosted services
Every repository is open to issues and pull requests — start with the CONTRIBUTING.md in the one you care about.
We are also hiring full-time OSS committers: eukarya.io/join


