| Academic Earth |
| African Health OER Network |
| Alison |
| Aljazeera creative commons repository |
| Almae Matris Studiorum Campus |
| Archive's library of Open Educational Resources |
| Ariadne |
| Banco de iten |
| BBC Learning |
| BCCampus Open Textbooks * |
| Bergen Open Research Archive (BORA) |
| BookBoon |
| California Digital Library |
| ChemCollective |
| Class Central |
| College of The Canyons * |
| College Open Textbooks * |
| Computer Science Open Educational Resources |
| Consortium for the Advancement of Undergraduate Statistics Education |
| California Open Online Library for Education (COOL4Ed) |
| CTE Online |
| Culturally Authentic Pictorial Lexicon |
| Curriki |
| Dashboard Equella |
| Desarrolla, Aprende y Reutiliza (DAR) |
| Digiref |
| Digital Library for Earth System Education |
| Directory of Open Access Books * |
| Discovery Education |
| Economics Network Online Learning and Teaching Materials |
| Edu Fi |
| Educar Chile |
| Edumedia Share |
| Eduteka |
| Everything Maths |
| First World War Poetry Digital Archive |
| Free programming books * |
| Free Science Videos and Lectures |
| FREIburger Multimedia Object Repository |
| Geoscience Data Repository |
| Global Learning Objects Brokering Exchange - GLOBE |
| Gooru |
| Harvard Open Collections Program |
| HBO Kennisbank |
| Hippocampus |
| History Matters |
| Hum Box |
| I-Berry |
| ITSON repositorio de objetos de aprendizaje |
| Jorum |
| Khan Academy |
| Klascement |
| Kursnavet |
| Lab Space |
| Learning Pod |
| LeMill |
| Libretexts |
| Lumen Learning |
| Making of America |
| Manufacturing Pasts |
| Matematica Multimidia |
| MathWorld |
| MedEdPortal, The Journal of Teaching and Learning Resources |
| Merlot |
| MIT Open Courseware |
| NanoHub, 1000s of nanotechnology resources |
| NASA Wavelength (Higher Education) |
| National Digital Learning Resources Network |
| National Learning Network |
|
| National Science Digital Library (NSDL) |
| NDLA |
| OAsis Commonwealth of Learning |
| OER Commons |
| Online Kennis |
| OpenAIRE - Netherlands Research Portal |
| Open Chemistry (University of California Irvine) |
| Open Course Library |
| Open Culture |
| Open Digital Archive - ODA - HIOA |
| Open Education Database (OEDB) |
| Open Educational Resources (OER) Africa |
| Open Educational Resources for Typography |
| Open Learning Initiative |
| Open SUNY (State University of New York) Textbooks * |
| Open Text Book Library * |
| Open Yale Courses |
| OpenLearn |
| OpenLearnWare |
| OpenMichigan |
| OpenStax (Connexions) * |
| OpenStax College * |
| Organic.Edunet Federation |
| Outreach and Technical Assistance Network |
| panOpen |
| Pearson Copyleft |
| PHET Physics Education Technology |
| Portal das Escolas |
| Project Gutenberg - Free eBooks |
| Public Domain Review |
| Public Library of Science |
| Recursos Educacionais Abertos Brasil |
| Repositorio de Objetos Digitales y Aprendizaje - RODA |
| Restore |
| Royal Roads University Open Educational Resources |
| Sankoré |
| Saylor.org * |
| Skills Commons |
| Skolresurser |
| Smithsonian |
| Spiral Physics |
| Stanford Encyclopedia of Philosophy |
| Stanford on ITunesU |
| Teach Astronomy |
| Teaching Commons |
| Temoa |
| Textbook Revolution (Free Cultural Works) * |
| The Global Text Project * |
| The Library of Congress |
| The London Met Elearning Matrix |
| The Orange Grove (Higher Education) |
| The Orange Grove (Open Textbooks) * |
| The world lecture project |
| TU Delft OCW |
| Tufts University |
| Ulusal Açik Ders Malzemeleri / Turkish National OER |
| Unglue * |
| UNITRACC |
| University of Cape Town |
| University of Leicester OER Repository |
| VCILT |
| VO-Content |
| VP Metodicky Portal |
| Webcast.Berkeley |
| Wikiwijs |
| Wisconsin Online Resource Center |
| Wolfram Demonstrations Project |
| World History Sources |
| Xpert |
| Zunia |
