Unpaywall: An open database of 20 million free scholarly articles - Chrome Extension
An open database of over 55 million free scholarly articles, harvested from 50,000+ publishers and repositories to make research accessible.
Score
30
User Rating
3.0
Free/Trial Support
Supported
Starting Price
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Last Updated
Aug 04, 2026
Overview
What is Unpaywall: An open database of 20 million free scholarly articles?
Unpaywall is an open-source, nonprofit tool that aggregates free scholarly articles from thousands of publishers and repositories, providing easy access through extensions, APIs, and data feeds for libraries, enterprises, and researchers.
What is Unpaywall: An open database of 20 million free scholarly articles used for?
User Groups
Top Features
- Open Access database
- Chrome/Firefox extension
- REST API
- Data feed
- Library integrations
- Nonprofit and open-source
How to use Unpaywall: An open database of 20 million free scholarly articles?
Install the Chrome/Firefox extension to find free versions of paywalled articles, use the REST API or data feed for integrations, or access the database snapshot for bulk data analysis in research projects.
Alternative Tools
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Pros & Cons
Pros
- Free access to millions of articles
- Open-source and nonprofit
- Wide integration with libraries and platforms
- Easy to use with browser extensions
Cons
- Limited to Open Access content
- May not cover all publishers
Use Cases
- Academic research
- Library resource management
- Enterprise data integration
- Student assignments
Unpaywall: An open database of 20 million free scholarly articles Pricing
Free Plan
No detailed pricing information available
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