Edition.fi contains Finnish Monographs and Edited Volumes Online
Intech Open Access Books contains openly accessible monographs, mainly in the field of physical sciences, engineering and technology, life sciences, health sciences, social sciences and humanities.
JSTORE Open Access ebooks from 90 publishers, including Brill, Cornell University Press, De Gruyter, and University of California Press. Contains openly accessible academic monographs, mainly in the field of humanities and social sciences.
Oapen offers an extensive, critical directory of Open Access monographs. The list of Top subjects provides useful information on subjects and contact information of various publishers.
OpenEdition is a French portal in the fields of humanities and social sciences.
Open Humanities Press includes Open Access books and journals.
The use of open resources as learning material is recommended. For more information on the benefits of open access books and how to assess their reliability, see Open course books in the Teacher's guide.