The Open Access Button works to instantly and legally find you access to the articles and data you need. When an article or dataset isn’t available, the Button creates a request to ask the authors to share it.
The Open Access Button is available as an extension for Chrome and Firefox.
Open Access (OA) is the free, immediate, online availability of research articles coupled with the rights to use these articles fully in the digital environment.
Find out if there's an open-access version of the article you want to read.
Unpaywall is a free browser plugin for Firefox and Google Chrome, and can help you locate freely accessible research articles. When you find an article you'd like to read, click the icon to be immediately redirected to freely available full text.
It's fast, free, and legal, powered by a database of millions of author-uploaded PDFs, thanks to open access policies.