The following resources do not necessarily have all of the 5 R's of open educational resources. However, they are generally freely available resources to use as an alternative to costly textbooks or subscription materials:
- Open Research Library
- Collection of over 14,000 peer-reviewed open-access scholarly monographs on a variety of subjects
- Hosted on the BiblioBoard platform
- Directory of Open Access Books
- Run by OAPEN, a nonprofit based in the Netherlands out of the National Library in The Hague, and governed by representatives from various universities
- A curated collection of over 76,000 open-access peer-reviewed scholarly books
- Directory of Open Access Journals
- A searchable global database of freely available peer-reviewed scholarly journals across broad disciplines
- Independent nonprofit governed by representatives from universities across the globe