Sapling
Free, forever
€0
The complete open-source geospatial canvas.
Collaborate, analyse spatial data and work with humans or AI agents in your browser. No account needed. Self-host it anywhere.
- The whole canvas, unlimited peer-to-peer rooms and collaborators
- Every format: PMTiles, COG, GeoParquet, GeoJSON, Zarr, S3 and HTTP
- Spatial SQL, SPARQL, 3D, timeline, sequencer, full export suite
- MCP and the Python Agent API, plus bring-your-own-key AI
- Self-hosting, offline-first, no telemetry
What you get
- Complete collaborative canvas
- Unlimited peer-to-peer rooms and collaborators
- Public sharing in the commons
- PMTiles, COG/GeoTIFF, GeoParquet, GeoJSON, Zarr
- S3-compatible and plain HTTP data, read in place
- Drawing, notes, measurements, presence
- Shared timeline and sequencer
- Spatial SQL, SPARQL layers, 3D mode
- Local history, offline-first, full export suite
- Python Agent API, MCP server, BYOK AI
- Self-hosting, no telemetry in the canvas
AI
- Bring your own API key. It stays client-side and requests go straight to your provider.
Hosting
- Local and peer-to-peer rooms are free. Public maps can be hosted in the commons. Private hosted maps need Canopy or above.