Tübingen University Library Online Catalogue

 Württembergian State Library Online Catalogue

 Stuttgart University Online Catalogue

 Union Catalogue of the Southwest German Library Consortium

 Karlsruhe Virtual Catalogue

 OASE - Open Access to Scientific Literature

 German Education Server

 Fachportal Pädagogik

 Landesbildungsserver

 Fachinformation Rehabilitation und Behindertenpädagogik

 Erlangen University Library Online Catalogue

 EconBiz - the virtual library for economics and business studies

 ECONIS - Online Catalogue of the German National Library of Economics

 Cologne University Library Online Catalogue

 Mannheim University Library Online Catalogue

 ViFaTec - Engeneering Subject Gateway

 Catalogue of the German National Library of Science and Technology

 GetInfo - Subject Gateway on Science and Technology