Open Textbook Library: Free Open Textbooks to Download and Adapt

The Open Textbook Library, operated through the University of Minnesota's Center for Open Education and supported by the Open Education Network, provides openly licensed textbooks for free use and adaptation. The official library states that open textbooks can be downloaded, edited and distributed at no cost, while its FAQ confirms that all open textbooks in the collection can be adopted for free without additional permission or paperwork because the authors and publishers have supplied open licenses. The catalog spans many higher-education subjects and changes over time as new titles are added. DealVorio does not copy or redistribute the books; this listing points readers to the official library so they can review each title's license, formats and attribution requirements before downloading or adapting it.