One-click access to millions of scholarly articles.
As another reviewer said, it's important to remember that this is tied to your library (like a College or University library). It does work great with pubmed and google scholar but I appreciate that it also works on publishers websites - many of our patrons go to the journal's website first and this will direct them back to full text / the library. This extension (and ThirdIron products) have been upgraded over the years to include features like Retraction Watch and, recently, the ability to view e-books.
Please note that this extension is related to your institution's library, if your school library doesn't have access to that article or journal, then you can't get the PDF, but it will try to find an alternative link for you. Overall, still a great tool, like it.
Easy to use and makes searching for articles easier. I would love it if we had a confirmation that it was installed.
https://scholar.google.com/
https://openaccessbutton.org
https://unpaywall.org
https://click.endnote.com/
https://www.zotero.org/
https://www.technologyfromsage.com/
https://scholar.google.com/
https://scholarcy.com
GetFTR
http://paperpile.com/
https://amboss.com
https://ebscohost.com
