Keyhole Markup Language

Google's web mapping service (launched 2005)

virtual map program developed by Google

Wikimapia (stylized as wikimapia) is a geographic online encyclopedia project. The project implements an interactive clickable web map that utilizes Google Maps with a geographically referenced wiki system, with the aim to mark and describe all geographical objects in the world.

open-source virtual globe developed by NASA

notation for expressing geographic annotation and visualization within Internet-based maps

web mapping service from Microsoft

virtual globe and atlas software

OpenLayers is a JavaScript library for displaying map data in web browsers as slippy maps. It provides an API for building rich web-based geographic applications similar to Google Maps and Bing Maps.

JavaScript library for web interactive cartography

geospatial mapping platform by Microsoft

web application