List of open heritage websites

This is a list of websites that exemplify the concept of open heritage.

Crowd sourced content
The following websites contain content, data, or metadata contributed by users.
 * Historical Marker Database, http://www.hmdb.org/
 * Markeroni.com, http://www.markeroni.com/
 * Open Plaques, http://openplaques.org/

Open heritage groups and organizations

 * Open Knowledge Foundation
 * Archaeology Working Group, http://archaeology.okfn.org/
 * Open Heritage Working Group, http://heritage.okfn.org/
 * Wikimedia GLAM (Galleries, Libraries, Archives and Museums) Cultural Collaborations Project, http://outreach.wikimedia.org/wiki/GLAM/Wikimedians

Wikis

 * Wikimedia Foundation Projects
 * GLAM (Galleries, Libraries, Archives and Museums) Cultural Collaborations Project, http://outreach.wikimedia.org/wiki/GLAM/Wikimedians
 * Wikipedia
 * WikiProject Archaeology, http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Archaeology
 * Wikipedia:WikiProject National Register of Historic Places, http://en.wikipedia.org/wiki/Wikipedia:WikiProject_National_Register_of_Historic_Places
 * WikiProject Public art, http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Public_art
 * Wikipedia:WikiProject World Heritage Sites, http://en.wikipedia.org/wiki/Wikipedia:WikiProject_World_Heritage_Sites
 * MuseumsWiki, http://museums.wikia.com/wiki/MuseumsWiki
 * Preservapedia, http://preservapedia.org
 * SaltWiki, http://www.saltwiki.net/
 * AIC Colaborative Knowledge Base, http://www.conservation-wiki.com/
 * CAMEO: Conservation & Art Materials Encyclopedia Online, http://cameo.mfa.org/wiki/Main_Page