- Oxford University Mathematics OpenCourseWare – Various online mathematics classes provided free by Oxford University.
- UMass Boston Mathematics – Various online mathematics classes provided free by UMass Boston.
- Whatcom Online Math Center – Various math lessons provided free by Whatcom Community College.
- VideoLectures.NET (Mathematics) – A free and open access educational video lectures repository. The lectures are given by distinguished scholars and scientists at the most important and prominent events like conferences, summer schools, workshops and science promotional events from many fields of Science.
- Wikiversity School of Mathematics – Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning.
- AMSER Mathematics – AMSER (the Applied Math and Science Education Repository) is a portal of educational resources and services built specifically for use by those in Community and Technical Colleges but free for anyone to use.
- Math.com – Math.com is dedicated to providing revolutionary ways for students, parents, teachers, and everyone to learn math.
- Intute Mathematics – Provides free access to high quality resources on the Internet. Each resource has been evaluated and categorized by subject specialists based at UK universities.
- Free-Ed College Mathematics – Offers a wide range of free online math courses and study programs.