UTFGrid is a specification for rasterized interaction data. As of version 1.2, it was removed from incubation in the MBTiles Specification and split into its own repository.

See CHANGELOG.md for per-version changes.

This specification is licensed under a Creative Commons Attribution 3.0 United States License.

Applications which make use of the specification are not subject to any restrictions.

• Mapnik's grid_renderer (Uses Antigrain Geometry library for rendering).
• Various python sample implementations
• GeoScript groovy example
• TileStache
• create-utfgrids

• Wax for adding support to the Leaflet, Modest Maps, OpenLayers, and Google Maps clients: examples, code
• Leaflet.utfgrid
• OpenLayers Native: blog post, general demo, example multi-grid, example geography-class
• GDAL MBTiles support
• Landez - Python module

• TileMill - via tilelive.js which uses tilelive-mapnik to request grid creation and node-mbtiles to cache and fetch grids stored in MBTiles format.
• TileStache's TileStache.Goodies.Providers.MapnikGrid:Provider
• django-mbtiles which serves grids stored in MBTiles along with tiles using a simple template tag.

• Tom MacWright (tmcw)
• Will White (willwhite)
• Konstantin Kaefer (kkaefer)
• Justin Miller (incanus)
• Dane Springmeyer (springmeyer)