The value of Crossref

Direct Member (we are a member of Crossref and we register our content with you)
Sponsored Member (we are a member of Crossref and we work with you via a Sponsoring Organisation)
Sponsoring Organisation (we are not a member and we have no content, but we represent and register content on behalf of Sponsored Members)
Metadata User of a paid service (we pay for a Crossref subscription service)
Metadata User of a free service (we use search or open APIs)
Collaborator (we have no official relationship but we work on the same community initiatives)
None (we are hosting platform or manuscript tracking system that works with Crossref members)
None (we have no relationship with Crossref or its members but are involved in the research community)

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