Chrome extension that works with Web of Science, PubMed, and Google Scholar to find navigate Paywalls by automatically search university library subscriptions, pre-print servers and institutional repositories for PDFs.
Chrome & Firefox extension to find available versions of a published article. Unpaywall is run by Impactstory, a nonprofit dedicated to making scholarship more accessible to everyone. Open is our passion. So it's only natural our source code is open, too.