Exchanging and archiving public and private graphs using GraphDB The Graph Data Base (GraphDB) is an exchange and archive system for graphs.
The system allows users to dynamically create metadata, graphs and graph groups. These items can then be associated with each other. The database can be queried and the resulting graphs are downloadable.
General information about GraphDB.
Webstart GraphDB Client:

or get the standalone application.
Help shows different help pages like essential elements or tutorials.
Contact GraphDB Team.
If you want to know more about current development you should visit these pages.