hpcfung's Shortform

Is there any attempt at compiling a list of all publicly available university courses materials (lecture notes, videos, reference books, syllabi), across all institutions? I seem to remember cosmolearning.org but the site is no longer running.

I imagine this kind of infrastructure is really helpful, or even necessary to self learners.

The equivalent for researchers would be conferences, summer schools/workshops, powerpoints for talks, etc.