Indexing

Databases

DOAJ

Google Scholar

Dialnet

BASE: Bielefeld Academic Search Engine

Recolecta

OpenAIRE/EXPLORE

Crossref

ResearchGate

Directories

Latindex Directory

ISSN Portal

EuroPub: Directory of Academic and Scholarly Research Journals

Persistent Identifiers

DOI

ORCID

ROR

Digital preservation

LOCKSS

CLOCKSS

The Keepers Registry

Others

Open Archives Initiative 

Creative Commons

Similarity Check/iThenticate

Spanish Web Archive

Internet Archive Scholar