What A&I services exist?
Around 200 companies and institutions currently offer A&I services, with a total of approx. 500 databases, ranging from scientific services covering all subject areas:
and companies with dozens of, in some cases highly specialised, databases:
through to services focused on individual specialisms:
and services dedicated exclusively to open access publications:
De Gruyter works together with all of these services and is constantly expanding its cooperation with new abstracting and indexing services.