Learners and educators in search of free textbooks may find a solution in LibreTexts, a nonprofit project that describes itself as "a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education at all levels of higher learning." Visitors to LibreTexts will find "twelve independently operating and interconnected libraries that focus on augmenting post-secondary education in specific fields in STEM fields, social sciences, and humanities." Within these libraries, readers can find bookshelves of digital textbooks, campus courses of customized LibreTexts, homework exercises, and ancillary materials such as visualizations and simulations. As of this write-up, LibreTexts contains nearly 400 open-access textbooks and other course materials that are developed collaboratively between faculty, students, and outside experts and scholars. LibreTexts is directed by its founder Delmar Larsen, Associate Professor of Chemistry at the University of California, Davis, who was inspired by his own frustration with errors in the conventional textbooks that his students had been paying for. In October 2018, LibreTexts was awarded the US Department of Education's inaugural Open Textbook Pilot Grant, worth a total of $4.9 million, which the project is using to expand their educational content and incorporate additional advanced features such as interactive 3D animations and integration with online learning management systems.