Physics
Journals
Journal of Research of NIST, U.S. Government publication (public domain)
Open Textbooks
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.
Physics LibreTexts Library (CC BY-NC-SA)
A collection of open textbooks, assignments, and other educational resources on sujects related to physics.
Physics Textbooks (Licences vary)
A collection of physics open textbooks.
Simulations
PhET Simulations (CC BY)
PhET provides fun, free, interactive, research-based science and mathematics simulations. We extensively test and evaluate each simulation to ensure educational effectiveness. These tests include student interviews and observation of simulation use in classrooms. The simulations are written in Java, Flash or HTML5, and can be run online or downloaded to your computer.