Open access archive to electronic preprints of scientific articles in mathematics, statistics, computer science and physics.
BookBoon.com offers 1500 free academic e-books in 7 languages. Bookboon's textbooks are focused on specific areas, including economics, statistics, information technology, engineering and natural science.
Central Asian Journal of Water Research is a bi-lingual, open-access, peer-reviewed e-Journal dedicated to all aspects of water management in the region of Central Asia.
Cogprints: Cognitive Sciences Eprint Archive
Electronic repository of articles and papers on psychology, linguistics, philosophy, computer technology, biology and more submitted by the authors.
College Open Textbooks provide open textbooks in Arts, Business, Economics, Math, Psychology, Sociology, Computer science, etc.
DOAB provides open access to over 1603 academic peer-reviewed books from 54 publishers. The primary aim of DOAB is to increase discoverability of Open Access books.
DOAJ is a service that provides access to quality controlled Open Access Journals. The Directory aims to be comprehensive and cover all open access scientific and scholarly journals that use an appropriate quality control system, and it will not be limited to particular languages or subject areas.
The Knowledge Unlatched Portal provides free access to full-length PDF versions of peer-reviewed scholarly books and articles
OpenDOAR is an authoritative directory of academic open access repositories. Each OpenDOAR repository has been visited by project staff to check the information that is recorded here. This in-depth approach does not rely on automated analysis and gives a quality-controlled list of repositories.
Open Textbook Library contains real, complete textbooks licensed so teachers and students can freely use, adapt, and distribute the material. Open textbooks can be downloaded for no cost, or printed inexpensively.
OpenStax College provide access to free textbooks developed and peer-reviewed by educators to ensure they are readable, accurate, and meet the scope and sequence requirements of your course.
Project Gutenberg includes over 42,000 free audio- and e-books. These are primarily classic books (novels, poetry, short stories and drama) from authors such as Shakespeare, Dante, Arthur Conan Doyle, Lewis Carroll, etc.)