Perspective: How Unpaywall is Transforming Open Science
17 Aug, 2018 | 02:21h | UTCHow Unpaywall is transforming open science – Nature News (free)
Related: Unlocking paywalled research papers (legally) (free commentaries) AND Half of papers searched for online are free to read (free)
We have been using the Unpaywall Extension for a while, and it is indeed a handy tool to find free versions (entirely legal) of paywalled articles.