- Open education resources (OER) or open course wares (OCW) are everywhere you look. Many have spent valuable time to make repositories of these courses where one can find links to several courses and these are everywhere as well. So, when I was answering a recent survey on OERs, they asked users which repositories they had used. I thought it would be good to have links to all the mentioned repositories, and they are given below.

And if you are wondering what an open education resource is, here is how Open Education Consortium defines it. “*An OpenCourseWare (OCW) is a free and open digital publication of high quality college and university‐level educational materials. These materials are organized as courses, and often include course planning materials and evaluation tools as well as thematic content.* *OpenCourseWare are free and openly licensed, accessible to anyone, anytime via the internet*.” **Acknowledgement**: I would like to thank USF student Brain G for finding and entering the links.

- AMSER (Applied Math & Science Education Repository) https://amser.org/
- BCCampus https://bccampus.ca/
- Bepress Teaching Commons https://www.bepress.com/
- Citizendium http://en.citizendium.org/
- College Open Textbooks Collaborative https://www.collegeopentextbooks.org/
- CommonSpaces https://www.commonspaces.eu/
- Connexions https://cnx.org/
- CreativeCommons.org https://creativecommons.org/
- CTE Online https://www.cteonline.org/
- Curriki (K-12) https://www.curriki.org/
- Edutopia https://www.edutopia.org/
- Gooru (K-12) https://gooru.org/
- H5P https://h5p.org/
- HippoCampus https://www.hippocampus.org/
- iLumia (unable to find education website)
- Internet Archive’s OER Library https://archive.org/
- IOER (Illinois Open Educational Resources) http://ioer.ilsharedlearning.org/
- Knowledge to Work https://www.knowledgetowork.com/
- LibreTexts https://libretexts.org/
- Lumen Learning https://lumenlearning.com/
- Merlot http://merlot.org/
- Oasis http://oasiseducation.net/
- OER Commons https://www.oercommons.org/
- OER Metafinder https://oer.deepwebaccess.com/
- Open Culture Textbook List http://www.openculture.com/free_textbooks
- Open Oregon State Textbooks https://open.oregonstate.edu/textbooks/
- Open SUNY Textbooks https://textbooks.opensuny.org/
- Open Textbook Library https://open.umn.edu/opentextbooks/
- Open Washington https://www.openwa.org/open-textbook-library/
- OpenStax https://openstax.org/
- Skills Commons http://www.skillscommons.org/
- Teaching Commons https://teachingcommons.us/ (same link as Bepress)
- Temoa http://temoa.tec.mx/
- The Orange Grove https://www.floridashines.org/orange-grove
- University of Minnesota Open Textbooks https://open.umn.edu/opentextbooks/ (same as Open Textbook Library)
- WikiEducator http://wikieducator.org/

This post is brought to you by

- Holistic Numerical Methods Open Course Ware:
- Numerical Methods for the STEM undergraduate at http://nm.MathForCollege.com;
- Introduction to Matrix Algebra for the STEM undergraduate at http://ma.MathForCollege.com

- the textbooks on
- the Massive Open Online Course (MOOCs) available at