Unpaywall - browser plug-in to locate OA content
Unpaywall retrieves Open Access content from over 50,000 publishers and research repositories, and makes it easy to find, track, and use freely available research.
It’s a browser plugin that will indicate if an Open Access version of an academic journal article, conference paper or book chapter is available when you’ve landed on a web page which is requesting a login and you're being asked to pay to view the item.
For example, instead of looking at a journal article on the publisher's website, it could alternatively be available in a university digital research repository as the final pre-print copy that was sent for publication.
Unpaywall - plug-in tool to indicate free scholarly content
EndNote Click
EndNote Click (formerly Kopernio) is a fantastic Google Chrome extension which can help you to locate Open Access versions of papers quickly and easily. When you come up against a paywalled journal article, Endnote automatically searches for a full text PDF elsewhere (i.e. in a university repository or similar OA database), and will pop up in the corner of your screen with "View PDF" if it finds one.
