Unpaywall

Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.

Unpaywall is available to install from Firefox Browser Add-ons and for download from this page. It has 68,919 active users The latest version is 3.98, and it was published 2 years ago.

Install from Firefox Browser Add-ons
View source code
Total download count: 0 (Only count downloads from Firefox-Stats)

All available versions

You can find the current and older versions of Unpaywall here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions
 1 version available for download.

Install XPI file

  1. Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  1. Download the Unpaywall ZIP file
  2. In Firefox browser, go to about:addons to open Add-ons Manager
  3. Click on , then select Install Add-on From File
  4. Select the Unpaywall ZIP file from step 1. Unpaywall is now installed on your browser.