Open Textbook Library

The Open Textbook Library provides access to free, openly-licensed textbooks that have been reviewed by faculty from various colleges and universities to assess their quality. The textbooks offered on the site are used at multiple higher education institutions throughout the country and many affiliated with an institution or professional organization. All textbooks can be adapted…

CUNY Academic Works

This Open Educational Resources series collects research and instructional materials — from articles to original textbooks and syllabi — by the faculty of the City University of New York. Users can search by institution, author, or discipline. (Users can search across 913 disciplines!) For instance, Queensborough Community College has developed a number of math OERs…

Open Library

Open Library is an extensive catalog of published books. The goal of Open Library is to “list every book — whether in-print or out-of-print, available at a bookstore or a library, scanned or typed in as text.” The catalog contains over 20 million recorded books and the platform provides access to ~1.7 million scanned versions of books. If…

Project Gutenberg

Project Gutenberg provides access to over 55,000 freely downloadable ebooks. The goal is to “encourage the creation and distribution of digital books, commonly known as eBooks, providing copyright free books for download via their website.” Check out the history and statistics of the project on the Project Gutenberg Blog. Visit Project Gutenberg Image source: Internet Archive