Linear Algebra: A Course for Physicists and Engineers (CC BY-NC-ND)
This open textbook is meant for courses on space and atmospheric science, remote sensing, geographic information systems, meteorology, climate and satellite communications at UN-affiliated regional centers, various applications of the formal theory are discussed as well. These include differential equations, statistics, optimization and some engineering-motivated problems in physics.
Mathematics LibreTexts Library (CC BY-NC-SA)
A collection of open textbooks, assignments, and other educational resources on the topic of mathematics.
Mathematics Textbooks (Licences vary)
A collection of mathematics open textbooks.
Applied Math and Science Education Repository (AMBER) (Licences vary)
A collection of educational resources and services on topics related to applied math and science.
A chart by Open Oregon Educational Resources comparing two open math platforms: MyOpenMath and WeBWork.
PhET Interactive Simulations (Open Source – CC BY)
The PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. The site is available in a number of languages.
Mathispower 4u Tutorials (CC BY-SA)
This site provides more than 6,000 free mini-lessons and example videos on different math topics.