Online Contents Classics provides access to the tables of contents of journals in the field of classical studies, especially Greek and Latin Philology, Prehistory, Early History, Ancient History and Archaeology, Egyptology. It is a subject-oriented selection of bibliographic data from the Database Online Contents. This database is regularly enhanced by table of contents data from additional periodicals out of the special collections of the University Library Heidelberg as German central subject library for Archaeology and Egyptology and of the Bayerische Staatsbibliothek, as German central subject library for Greek and Latin Philology and Ancient History.

The Online Contents service of the Special Subject Collection Political Science and Peace Research is part of the Online Contents database. It offers access to tables of contents of more than 870 journals relevant for study and research. New journals were added until December 2013 by the Special Subject Collection. Thus the database contains approximately 1.478,600 records of journal articles and reviews.

This historic journal index enables the simultaneous search in millions of citations for articles published in the arts, humanities and social sciences, across more than 300 years. It enables researchers quickly and comprehensively to identify articles relevant to their field of study and reduces what could take years of research to a matter of minutes. Journals indexed span 37 key subject areas and multiple languages.