Free papers

Preprints, open-access journals, literature search and institutional repositories — doors to real papers that cost nothing.

11 sites

openalex.org

OpenAlex

6 clicks

An open map of the research literature

Literature search searchopen data Details

semanticscholar.org

Semantic Scholar

4 clicks

Literature search with AI summaries

Literature search searchAI Details

base-search.net

BASE

2 clicks

An academic search engine built in Germany

Literature search searchaggregator Details

core.ac.uk

CORE

3 clicks

The largest aggregation of open-access full text

Literature search full-text searchopen access Details

unpaywall.org

Unpaywall

3 clicks

Finds the legal free version of a paper

Literature search open accesstools Details

europepmc.org

Europe PMC

6 clicks

A full-text database for the life sciences

Literature search life sciencesfull text Details

pubmed.ncbi.nlm.nih.gov

PubMed

3 clicks

The standard index for medical literature

Literature search medicinesearch Details

ncbi.nlm.nih.gov

PubMed Central

4 clicks

A free full-text library in biomedicine

Literature search medicinefull text Details

eric.ed.gov

ERIC 教育文献库

8 clicks

The US education department's research library

Literature search educationfull text Details

nber.org

NBER 工作论文

4 clicks

A high ground for economics working papers

Literature search economicsworking papers Details

openaire.eu

OpenAIRE

10 clicks

Europe's open science infrastructure

Literature search open scienceEurope Details