Quatuo is  a service allowing the users with  a Google account to create, view, edit, and publish their friend of a friend (FOAF) profile on the web. It’s also possible to use Quatuo to search profiles and find relations between peoples.

Quatuo, launched by Scub, is a web semantic search engine that allows anyone to search exact informations about peoples and their relations.

Quatuo crawls the web to discover and collect informations about peoples thanks to the FOAF web semantic vocabulary. All the informations we can find are stored in our dabatase to allow an easy and fast search. To make it highly scalable, Quatuo is running in the could thanks to the Google App Engine infrastructure.