No. 20 of 33 ·Academic Research Databases

PubMed

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Freedom report

One barScore 5.2

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedThinly documented

PubMed is ranked #20 of 33 in academic research databases on Freedom251. It runs on API, Web. There is a free plan.

PubMed plans and pricing

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PubMed Free Free resource for searching and retrieving biomedical and life sciences literature pubmed.ncbi.nlm.nih.gov · 5 Oct 2026

Compared on academic research databases

Free plan: Yes
Full-text access: No
Advanced search: Yes
Subject coverage: medical
Content types: citations, abstracts, journal literature, books, book chapters

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The record

Purpose: PubMed supports searching and retrieving biomedical and life sciences literature to help improve health.
Collection: PubMed contains more than 40 million citations and abstracts from biomedical literature.
Full text: PubMed does not include full-text journal articles, but records often link to full text available from other sources.
Content sources: PubMed includes citations from MEDLINE, PubMed Central, and Bookshelf.
Search tools: PubMed offers Advanced Search, Clinical Queries, Single Citation Matcher, and Batch Citation Matcher.
Search assistance: Search features include Best Match ranking, autocomplete suggestions, spell checking, and a citation sensor.
Filters: Search results can be filtered by publication date, text availability, article type, language, species, sex, age, and other criteria.
Related citations: Citation abstract pages include a Similar Articles section with a pre-calculated set of closely related PubMed citations.
Export: PubMed provides options to export citations to citation management software.
Email updates: Users can receive email updates when new results are available for a search.
API: PubMed provides the E-utilities API for accessing its data.
Download: PubMed provides data downloads through FTP and a Batch Citation Matcher.
Limit: Some linked full-text journal sites may require a fee or subscription.
Privacy: NLM states that it does not collect personally identifiable information during a site visit unless the visitor explicitly provides it.
Price from: Free

Where it ranks on Freedom251

Best Academic Research Databases in 2026#20 of 33

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Sources

pubmed.ncbi.nlm.nih.gov/about/· checked 5 Oct 2026
pubmed.ncbi.nlm.nih.gov· checked 5 Oct 2026
pubmed.ncbi.nlm.nih.gov/help/· checked 5 Oct 2026
nlm.nih.gov/web_policies.html· checked 5 Oct 2026