The blue social bookmark and publication sharing system.
Log in with your username.
I've lost my password.
Log in with your OpenID-Provider.
ThinkUp is a free, open source web application that captures all your activity on social networks like Twitter, Facebook, Google+ and Foursquare.
BibSonomy is offered by the KDE group of the University of Kassel, the DMIR group of the University of Würzburg, and the L3S Research Center, Germany.