The german Gedcom database can be searched for complete family data. Unfortunately, it is not yet available in English.
The GedBas project was founded by the Verein für Computergenealogie. It should help family researchers to establish contact with other interested researchers and exchange search results. Contrary to FOKO, GedBas contains detailed information. So it is not necessarily required to send an Email or a letter to the submitter, because everyone can see at once by searching the database whether the research results are of interest to him or not.
(source:Society for Computergenealogy e. V.)