Build maps, manage data, automate pipelines — all in the open.
A free, open and highly extensible WebGIS platform. Bring your GIS data onto a 3D globe, style it, tell a story with it, and publish it — no code required. React TypeScript Go GraphQL |
Creating and publishing databases. Model your geospatial content, keep it reviewed and versioned, and serve it straight to your apps through an API. React TypeScript Go GraphQL |
An ETL web tool to build and run automated workflows. Wire up nodes on a canvas to convert, validate and transform large geospatial datasets. Rust React TypeScript Go |
A highly extensible 3D map engine. A headless GIS core in Rust/WebAssembly with a tiered API — declarative config at the top, your own shaders at the bottom. Rust WebAssembly Three.js TypeScript |
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
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Repositories
- reearth-classic Public
- navara Public
Navara is a highly extensible 3D map engine. Load a wide range of GIS data, from satellite imagery and terrain to 3D city models and vector data, then freely layer your own visualizations on top.
- reearth-flow Public
An ETL web tool to build and run automated workflows. Calculate and convert various data.
- .github Public
- okibi Public
Cache warming for on-demand tile services — a portable demand-log vocabulary, a deterministic planner that turns "what died" and "what people actually ask for" into a reviewable warm plan, and the price of a cache invalidation shown on the pull request that causes it
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