The Open Source Geospatial Foundation (OSGeo) is a U.S.-based not-for-profit organization that supports and promotes the use and collaborative development of open-source geospatial technologies and data around the world. OSGeo offers marketing, financial, organizational, and legal help for its projects. The mission includes advocacy and marketing and encourages the development of [Page 2089]business models based on Open Source GIS (OSGIS). The foundation acts as an advisory body for OSGIS software projects as well as educational material and public geospatial data development projects. Communication is based on classical methods and newer Web 2.0 tools: Wikis, issue trackers, mailing lists, Web sites, Internet Relay Chat, and blogs.