If you are looking for open access journal articles, try out these simple and effective tools.
Unpaywall
Download the free browser extension for Firefox or
Chrome. When you search for articles in databases or in Google Scholar,
click on the article title. When an Open Access version of an article is
available from a publisher, repository or other legitimate source, a green
padlock icon appears on the right side.
The Open Access Button is a free tool that allows you to
find free, legal articles with just a click. You can search by article
title, URL, DOI or citation to locate an open access version of a known article
you are trying to locate.
Open Access App in the Find It Discovery Service
We have added an Open Access (Unpaywall) app to our Find it Discovery Service. Click on it to retrieve an Open Access version of an article. See the example below.
Updated by Patti Wilson, April 27, 2020