Polymaps is a free JavaScript library designed to create dynamic, interactive maps for modern web browsers. The library quickly displays scalable, multi-zoom datasets over maps, and supports various visual presentations for tiled vector data. Using SVG (Scalable Vector Graphics) and familiar CSS rules, users can customize their maps. It is suitable for displaying information from country-level down to individual streets.
RT @neb: stamen and simpleGeo release behold the vectory, geospatial goodness.