NCSTRL (pronounced "ancestral", Networked Computer Science Technical Reports Library) is an international collection of computer science technical reports made available for non-commercial use from a number of participating institutions.

Scirus is a search engine that scans an international collection of institutional repositories and other resources.

Gale is an American educational publishing company based in Farmington Hills, Michigan, west of Detroit. It has been a division of Cengage since 2007.

ICPSR, the Inter-university Consortium for Political and Social Research, was established by University of Michigan in 1962, an integral part of the infrastructure of social science research.