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Best Free Textbooks

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Rankings are calculated based on verified user reviews, recency of updates, and community voting weighted by user reputation score.

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Best 1 OpenStax
OpenStax
Free Plan Available

OpenStax offers free, peer-reviewed textbooks for high school and college students. Its content is aligned with national standards and includes interactive elements such as quizzes and simulations, ma...

Open Source Stem Free Textbooks College Level Courses Multimedia Content Textbooks College Level Content Peer Reviewed College Level College Prep
9.1 Excellent
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2 CK-12 Foundation
CK-12 Foundation
Free Plan Available

CK-12 Foundation provides free, customizable science textbooks and learning resources. Their platform offers interactive simulations, adaptive practice exercises, and a vast library of science content...

Educational Open Source Adaptive Learning K 12 Free Textbooks Science And Math Interactive Exercises Adaptive Practice Customizable Content Textbook Content
8.2 Very Good
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3 Saylor Academy
Saylor Academy

Saylor Academy provides free, self-paced courses across a wide range of subjects, including business, computer science, and humanities. While the courses themselves are free, learners can pay a small...

Free Self Paced Free Textbooks University Level Academic Subjects Accredited Courses Assessment Fees College Credit Certificate Options Self Paced Learning
6.3 Fair
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