Open Access Resources (OER/OAT): Open Access Textbooks (OAT)

Bookboon.com was established in Denmark in 1988, under the name Ventus, and has always focused on publishing educational material for students and business professionals. In 2005, the company made a strategic leap and became the world’s first online book publisher to provide free textbooks for students.
Since 2005, bookboon.com has experienced massive growth and is now the world’s largest eBook publisher.

Catalog of educational content originally curated by Boundless. In collaboration with the Boundless team, Lumen Learning imported these OER courses to the Lumen Platform, to ensure they remain freely available to the education community after Boundless ceased operations. Lumen maintains the Boundless content in the same condition it was provided to us, and courses may contain some formatting and accessibility issues.

LibreTexts is a non-profit organization committed to freeing the textbook from the limitations and costs of traditional textbooks. Our open and freely accessible LibreTexts provide a more engaging learning experience for students without the financial burden.

MIT OpenCourseWare (OCW) is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity. Includes materials from over 2340 MIT courses.

Noba is a free online platform that provides high-quality, flexibly structured textbooks and educational materials. These textbooks and materials are licensed under the Creative Commons CC BY-NC-SA 4.0 International License. Users may reuse, redistribute, and remix the content to suit their needs.

Great site for an overview of OAT. The Open Access Textbooks Project is a two-year initiative to create a sustainable model for the discovery, production, and dissemination of open textbooks. Funded by a grant from the Fund for the Improvement of Postsecondary Education (FIPSE), this project builds on lessons learned in open textbook efforts across the United States and seeks to create a collaborative community to further sustainable implementation of open textbooks.

Dr. Richard Baraniuk founded OpenStax (then Connexions) in 1999 at Rice University to provide authors and learners with an open space where they can share and freely adapt educational materials such as courses, books, and reports. Today, OpenStax CNX is a dynamic non-profit digital ecosystem serving millions of users per month in the delivery of educational content to improve learning outcomes. There are tens of thousands of learning objects, called pages, that are organized into thousands of textbook-style books in a host of disciplines, all easily accessible online and downloadable to almost any device, anywhere, anytime.

The Open Textbook Library provides a growing catalog of free, peer-reviewed, and openly-licensed textbooks.

On September 27th 2016, Governor Gina Raimondo announced a statewide Open Textbook Initiative during a press conference at Rhode Island College (RIC).
The initiative challenged Rhode Island’s higher education institutions to reduce college costs by saving students $5 million over five years using open licensed textbooks.

Textbook Revolution is a student-run site dedicated to increasing the use of free educational materials by teachers and professors. On this site you'll find links and reviews of textbooks and select educational resources. Some of the books are PDF files, others are viewable online as e-books, or some are simply web sites containing course or multimedia content.