DOAB Directory of Open Access Books is an international search service that indexes and provides access to openly available scholarly and peer-reviewed books. The search service can assist you in finding trusted open access publishers. All DOAB services are provided free of charge and all data are freely available. It is possible to search by subject, publisher or language.
The OAPEN Online library and publication platform has a list of publishers that follow the criteria for open access set by the European Research Council.
Kriterium is a Swedish platform for reviewing, publishing and disseminating high-quality academic books. Kriterium facilitates collaboration between publishers and authors who wish to have their books peer reviewed and published with open access. Örebro University is involved and supports Kriterium.
ScholarLed is a consortium of smaller publishers that publish open access books.
“Think, Check, Submit” is a website with information on what to look for when choosing a book publisher.
OA Books Toolkit contains current information on publishing open access books. Here you can find both practical advice, for example on choosing a licence, and more general information, for example on different types of publishers.