The Symbiota2 project is an open source software project, with central goal of developing on-line tools that aid in the generation, exploration and management of biodiversity data (collection specimens, observations, images, checklist, keys, etc.). See also: http://bdj.pensoft.net/articles.php?id=1114 and http://symbiota.org/
Heat map function only works for # of records but it would be helpful to create species richness heat maps.