Collection of electronic pre-prints, and e-print service, in the fields of physics, mathematics, non-linear science and computer science.

Consists of reviews, abstracts and citations to the world's research literature in mathematics and related areas compiled from Mathematical Reviews and Current Mathematical Publications. It is produced by the American Mathematical Society and provides citation data for journals, authors, articles and reviews based on the reference lists from over 550 journals. Bibliographic data for articles provided starting in early 1800s.

The online version of Science Citation Index has been incorporated into the Web of Science database.

Provides citation access to books and over 2,000 journals published by Elsevier in the following disciplines: science, technology, medicine, and social sciences. Full-text content is available to most of the journal titles 1995 to the present.

Provides access to the electronic editions of the research journals published by the Society for Industrial and Applied Mathematics. Includes recently posted articles scheduled to appear in SIAM's print journals over the next one to two years.

Provides online full-text access to journal titles from 1997 to 2016 (except for a small number of titles which are current) and to books published from 2005 to 2011. Published content is predominantly in the sciences, medicine, technology, business and economics.

Indexes and abstracts citations in research journals across the disciplinary spectrum. Online version of: Arts and humanities citation index (1975-present); Science citation index (1900-present); and Social sciences citation index (1956-present).