Open Book Publishers ( OBP ) is an open source academic book publisher based in the United Kingdom . It is a non-profit social enterprise and community interest company (CIC) that promotes open access for full academic monographs , critical editions and textbooks in Humanities , Social Sciences , Mathematics and Science . All OBP books are peer-reviewed .  
OBP All titles are available in free, open access editions in PDF and XTML formats on the publisher’s website, and a number of platforms Including Google Books , Worldreader , OpenEdition , Doab , The European Library and Europeana .  Some editions are hosted on Wikiversity in socially editable format (eg In the Lands of the Romanovs: An Annotated Bibliography).  Readers in developing countries can access OBP titles using e-readers and 2G mobile phones via Worldreader .
Open Book Publishers was founded in 2008 by Rupert Gatti and Alessandra Tosi , both academics from the University of Cambridge . William St Clair joined OBP in 2009. OBP is now the biggest open access academic publisher of monographs in the UK. By the Spring of 2016, it had 77 books in its catalog, all of which are free to read online.  With print on demand technology OBP titles are available in paperback and hardback editions.
As open access monographs , the full text of all books published by OBP is licensed under Creative Commons Licenses , but some third party content is not.
OBP has four main sources of revenue:
1. Sales Revenue: Along with the free editions, the publisher retails five different editions (hardback, paperback, epub, mobi, and an enhanced pdf). (Amazon, etc.). This is an automatically generated translation.
2. Publishing Grants: Though OBP does not impose a mandatory publishing charge on authors, they do encourage authors to apply for grants to offset publication costs.
3. Library Membership Scheme: Member libraries pay an annual fee of £ 300 (or $ 500 / € 400), and OBP in a subscribing university.
4. OBP Grants and Donations: general donations and grants directly to OBP to support their work. 
OBP organized a campaign to republish an out-of-print book by Ruth Finnegan through the crowd source funding platform Unglue.it .   OBP uses print on demand in the production of their paper editions. As a not-for-profit enterprise, all revenue is reinvested excess of OBP and OBP this Enables to publish peer-reviewed books by authors with limited funding. Academic merits and publicity are the determinants of publication decisions. 
- Knowledge Unlatched
- World Oral Literature Project , which is a partner of OBP
- International Network for the Availability of Scientific Publications (INASP), which OBP is part of.
- Jump up^ Finnegan, Ruth (2011-08-11). “Open Access: taking academic publishing out of ivory tower” . The Independent . Retrieved 2012-07-05 .
- Jump up^ Gatti, Rupert (2011). “CAM Debate: Access All Areas” . Cambridge Alumni Magazine, Issue 62, 2011 . Retrieved 2012-06-28 .
- Jump up^ .
- Jump up^ Cross, Anthony (2014). “In the Lands of the Romanovs” . Wikiversity . Retrieved 2016-06-14 .
- Jump up^ Open Book Publisher (2016). “Catalog of Open Book Publisher” . Open Book Publisher Website . Retrieved 2016-06-14 .
- Jump up^ Gatti, Rupert (2015). “Introducing Data to the Open Access Debate: OBP’s Business Model (Part Three)” . Open Book Publishers . Retrieved 2016-06-14 .
- Jump up^ Turin, Mark (2012-06-19). ” ” Unglue “a landmark of African cultural studies . Cambridge Research News . Retrieved 2012-07-01 .
- Jump up^ Chen, Angela (2012-06-19). “Start-Up Hopes to Create Free Digital Versions of Published Books” . Cambridge Research News . Retrieved 2012-07-01 .
- Jump up^ Pauli, Michelle (2011). “Open Book Publishers: Cambridge scholars taking monograph publishing into their own hands” . Open Access Success Stories . Retrieved 2012-06-17 .