When you view a paywalled scholarly article, Unpaywall automatically checks its open database of 16 million legal, open-access articles. If there's an open version somewhere, you'll see a green tab on the article. Click the tab and read for free, legally!

Unpaywall is a free, open-source project from Our Research, a nonprofit dedicated to making scholarly research more open, accessible, and reusable.

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• License: MIT License
• Weekly downloads: 1180
• Average daily users: 49006
• Rating: 4.3878/5 of 196 ratings
• Created: 2017-03-04 23:08:24
• Last updated: 2021-07-28 16:05:43
• Homepage: https://unpaywall.org/products/extension
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/unpaywall/
• API: {f209234a-76f0-4735-9920-eb62507a54cd}