SUSHI Server Registry

ACM (on Scholarly iQ)

APA PsycNET

Accessible Archives, Inc.

Alexander Street Press

American Chemical Society

American Economic Association

American Physical Society (APS)

American Society of Agronomy (ASA)

BioOne

Coimbra University Press

Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Computing Reviews

EBSCO Information Services

Elsevier (ScienceDirect)

Elsevier (Scopus)

HighWire Press

IOP Publishing

Institute of Electrical and Electronics Engineers, Inc. (IEEE)

Irish Newspaper Archives (INA)

New England Journal of Medicine

NewsBank

Optical Society of America (OSA)

Oxford University Press

Portland Press Ltd.

Project Euclid

RMIT Publishing

S. Karger AG

Silverchair

Springer

Thomson Reuters

Vision4Press

Wolters Kluwer Law and Business