- OsGeo Umbrella Open Source Geospatial Foundation.
- GeoJSON Format Specification GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON).
- Mapnik C++. Toolkit for developing mapping applications.
- Kothic A MapCSS/0.2 python rendering engine.
- Kothic JS A full-featured JavaScript map rendering engine using HTML5 Canvas
- TileMill Application for making beautiful maps. Frontend solution to handle a user defined rendering of Mapnik. Uses simpler style format.
A Slippy Map is, in general, a term referring to modern web maps which let you zoom and pan around (the map slips around when you drag the mouse).
- Leaflet Open-Source JavaScript Library for Mobile-Friendly Interactive Maps
- GeoMoose JavaScript. Web Client JavaScript Framework for displaying distributed cartographic data
- MapFish Python. Flexible and complete framework for building rich web-mapping applications. It emphasizes high productivity, and high-quality development.
- GeoCouch for CouchDB
- SpatialIndexing for MongoDB
- PostGIS is a spatial database extender for PostgreSQL object-relational database.