Structured, pedagogically organised content: open textbooks, course materials, and learning resources. Well suited to educational RAG and tutoring systems.
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One of the largest open textbook platforms, covering higher education with some K-12 material. Hosts interlinked textbooks and reference material across science, mathematics, humanities, and social sciences. Mostly NonCommercial, so commercial use is ruled out.
A discovery tool that runs a real-time simultaneous search across 21 different sources of open educational materials, rather than searching a static database. Useful for finding content to ingest, not a dataset in itself.
A curated collection of online learning and support materials, plus content-creation tools, led by an international community of educators, learners, and researchers. Points to resources hosted elsewhere across many disciplines.
Teaching materials from more than 2,500 MIT undergraduate and graduate courses, published freely online. Includes lecture notes, assignments, and exams. Released under a NonCommercial licence, so it is free to use for non-commercial purposes only.
A digital library of over 500,000 open educational resources gathered from institutions around the world. Aggregates full courses, modules, lesson plans, videos, simulations, and assessments across every discipline and education level.
A searchable catalogue of free, openly licensed textbooks, developed by the University of Minnesota. Open textbooks here are funded, published, and licensed to be freely used, adapted, and distributed, with faculty reviews on each entry.
The Open University's free learning platform, offering courses and educational resources across a wide range of subjects and academic levels. A strong UK-based option for education content. Released under a NonCommercial licence, so commercial use is not permitted.
Openly licensed college textbooks from a non-profit initiative of Rice University. Peer-reviewed titles cover common undergraduate subjects, free to read online and available in low-cost print, and are used by millions of students each month.