UnpaywallWe harvest Open Access content from over 50,000 publishers and repositories, and make it easy to find, track, and use. Unpaywall is a project of OurResearch, a nonprofit building tools to help make scholarly research more open, connected, and reusable. That's us in the picture (clockwise from top): Richard Orr (Twitter), Heather Piwowar (bio, publications, Twitter), and Jason Priem (bio, publications, Twitter).