Academic — scored on the SourceScore Index

6 sources in the academic category, ranked by SourceScore Index. Average Index across this category: 89.

1. #1
   DOI (CrossRef Resolver)

   doi.org

   International standard identifier resolver for academic citations (~150M+ DOIs).
   A+·95
2. #2
   PubMed

   pubmed.ncbi.nlm.nih.gov

   U.S. National Library of Medicine literature index covering ~36M biomedical citations.
   A·94
3. #3
   arXiv

   arxiv.org

   Open-access preprint server for physics, mathematics, computer science; ~2.4M papers since 1991.
   A·89
4. #4
   Nature

   nature.com

   Peer-reviewed science journal with rigorous methodology disclosure and open-data trends.
   A·87
5. #5
   Science

   science.org

   Peer-reviewed multidisciplinary journal of AAAS; one of the two flagship general-science venues.
   A·86
6. #6
   Semantic Scholar

   semanticscholar.org

   AI-powered academic search engine by Allen Institute for AI; ~200M+ papers indexed.
   B·83