Opening the Future is a collective subscription model for OA books. Libraries can sign up for its membership scheme, which implies that they grow their collections and support Open Access at the same time. The objective is to raise small contributions from a large number of academic libraries, so that no single institution bears a disproportionate burden.
How does it work?
A library subscribes to a backlist package of non-OA books offered by a publisher. The publisher makes this backlist package of non-OA books available to subscribers only (in other words: books in this package remain non-OA), but uses the subscription money to publish new books in OA. These new books are thus made available to everyone in OA, benefitting scholars and institutions around the world.