The Directory of Open Access Books is a service of OAPEN Foundation. The OAPEN Foundation is a not-for-profit organisation based in the Netherlands, with its registered office at the National Library in The Hague. OAPEN is dedicated to open access, peer-reviewed books. OAPEN operates two platforms, the OAPEN Library (www.oapen.org), a central repository for hosting and disseminating OA books, and the Directory of Open Access Books (DOAB, www.doabooks.org), a discovery service for OA books. We work with publishers to build a quality-controlled collection of open access books, and provide services for publishers, libraries and research funders in the areas of dissemination, quality assurance and digital preservation.