From the UK-based open monograph project [COPIM](

> Available on Github at [](, features of the system include order tracking, billing management, notification of new sign ups, and access control for backlist packages of books.

The [open source code](—developed for the [CEU Press initiative]( to use back-catalogue access membership to fund current OA publishing—should be adaptable to any consortiable funding model. Can't wait to dive in.