This metafinder will search not only for courses and textbooks, but also for online resources, quizzes, simulations, images etc. Courses provide outcomes as well as content. Note the select language button on the bottom right. Translation of course materials into many languages is possible.
Joining MERLOT (free) brings the opportunity to contribute courses and resources for the community to use.
This clearing house for textbooks provides faculty reviews of the books and gives adoption criteria. Course descriptions and syllabi are also included. Virtual labs for STEM and Career and Technical Training modules and simulations are also available.