Books
Open Textbook Library include textbooks that are licensed by authors and publishers to be freely used and adapted.
OpenStax Textbooks are textbooks and additional resources (slides, test banks) on introductory courses and select upper-level courses (such as in the subjects of Nursing and Business).
Pressbooks is a free, searchable catalog that includes 8,000+ open access books published across 200+ unique networks using Pressbooks. If your institution subscribes to Pressbooks, you can create a copy in Pressbooks to revise existing materials.
LibreTexts: has over 3,000+ textbooks for postsecondary education that can be copied and revised on the platform for free.
Teaching Commons include textbooks, course sites, syllabi, course materials, lectures and other educational materials published by higher education institutions.
CK-12 Foundation is primarily aimed at K-12 students and educators, offering free "FlexBooks" (digital, customizable textbooks) and other resources like videos, exercises, and real-world applications in STEM subjects.
Directory of Open Access Books (DOAB) is a community-driven discovery service that indexes and provides access to scholarly, peer-reviewed open access books.
OAPEN connects libraries , publishers , researchers , and funders with a global infrastructure for peer-reviewed open access books to advance research and the public good.
E-Books Directory is a categorized index of freely available online books.
Freebookcentre.net provides thousands of free online technical books.
InTechOpen focuses on books in the science, technology, and medicine fields.
NCBI Bookshelf focuses on books in the life science and healthcare fields.
The National Academies Press is a database of reports and books from the National Academies of Sciences, Engineering, and Medicine
Noba Project provides free, high-quality, peer-reviewed online textbooks and educational materials, primarily focused on psychology.
Project Gutenberg provides access to books (specifically literature) for which the copyright has expired.
HathiTrust Digital Library provides books, journals, and other resources from research libraries.
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