ACM Digital Library Contains bibliographic information, abstracts, reviews, and full-text articles published in ACM periodicals and proceedings since 1985.
Compendex contains bibliographic citations and abstracts from engineering journals and conference proceedings. It also includes Engineering Index Backfile (1884-1969).
MathSciNet provides access to a database of reviews, abstracts and bibliographic information for the mathematical sciences literature from 1940 to the present.
For the full list of Computer & Information Science databases, visit this page.