The New Plugins - What Goals Are the Access Solutions Pursuing? - The Scholarly Kitchen

"We now see some interesting positioning moves by entities with plugins designed to exploit Green OA or address access issues in a virtual, seemingly decentralized way — Unpaywall, Kopernio, and Anywhere Access. There is also the STM community’s effort to improve access, RA21. As a group, these and a few others coming onto the market represent commercial responses to the presence of Sci-Hub, ResearchGate, and Academia.edu. While they have interesting positioning, their execution differs in some key ways."