Wikisky
Sky-Map.org
Wiki and interactive sky map of celestial objects
Sky-Map.org (or WikiSky.org) is a wiki and interactive sky map that covers over half a billion known celestial bodies.[1] WikiSky is designed, in part, as a wiki. As such users can edit information about different stars by writing articles, adding Internet links, uploading images, or creating a special interest group for a specific task.[2][3]
The website, although still available for users to visit, has shown little activity since 2010.