Google Scholar
Zeitschriftendatenbank (ZDB)
The ZDB actually contains more than 1.5 million bibliographic records of serials from the 16th century onwards, from all countries, in all languages, held in 4300 German (and some foreign) libraries, with 8.7 million holdings information. It does not contain contents, i. e. journal articles.
Association for Computing Machinery (ACM) Digital Library
Papers of ACM journals and proceedings
DFG Nationallizenzen
Springer-Link
 
Elektronische Zeitschriften (EZB)
Datenbank-Infosystem (DBIS) der Saarländischen Universitäts- und Landesbibliothek
WWW-OPAC des Südwestdeutschen Bibliotheksverbundes
This bibliographic database references all kinds of media of more than 1000 libraries in Baden-Wuerttemberg, Saxony, Saarland, and Rhineland-Palatinate. It contains 47 million holding records for about 12 million titles of mainly scientific literature. These comprise 1.2 million holding records of 350.000 journals.
Joint examination office of all faculites of Natural Sciences and Technology
VG-Wort