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OAPEN
A world of scholarly books:
Open to all, built to last.
OAPEN connects libraries , publishers , researchers , and funders with a global infrastructure for peer-reviewed open access books to advance research and the public good.
Learn about how we support our community.
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Our collection, in numbers
These numbers reflect the collective global ambition to realise a fully open access (OA) books future.
- Open access books
- 40,000+
- Participating publishers
- 450+
- Languages represented
- 80+
The latest from OAPEN
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Spotlight
Forthcoming event attendance
Come meet us in person at these conferences. This is a rolling list and as new conferences and events are added older ones will be removed, so make sure to check back regularly!
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Spotlight
OAPEN Library hosts new Big Ten Open Books collection on Indigenous North Americans
The Hague, 10 September 2025 OAPEN is pleased to announce continued support for Big Ten Open Books by hosting its latest collection in the OAPEN Library, making...
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Spotlight
Introducing OAPEN’s new visual identity
The Hague, 1 October 2025 We’re thrilled to share an exciting new update for OAPEN. Today, we unveil our refreshed visual identity – including a new logo – that better reflects who we’ve become, what we...
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Blog post
OAPEN and DOAB at the Open Access Tage 2025
We were delighted to participate in the OA-Tage 2025 in Konstanz in September. The energy, commitment and level of engagement from everyone present was truly inspiring. Together with the German speaking open access community,...
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Blog post
Vacancy note: Metadata & Systems Specialist
OAPEN and the Directory of Open Access Books (DOAB) are looking for a Metadata & Systems Specialist to become part of the technical team. OAPEN works with publishers to build a quality-controlled collection of open access...
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Bluesky Feed
OAPEN presents the
OA Books Toolkit
For authors
The Toolkit offers clear guidance on open access (OA) book publishing for researchers and authors, and supports policy makers in shaping effective OA policies for books.
Our funders’ collections
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DFG – German Research Foundation -
EU - European Union -
FWF - The Austrian Science Fund -
Knowledge Unlatched -
NWO - The Dutch Research Council -
ScholarLed -
SCOAP3 - The Sponsoring Consortium for Open Access Publishing in Particle Physics -
SNSF - Swiss National Science Fund -
UKRI - UK Research and Innovation -
Wellcome