https://www.gtk.org/ - идеально для кроссплатформенной разработки на С++
https://www.wxwidgets.org/
https://cs.uwaterloo.ca/current/courses/course_descriptions/
https://github.com/TrillCyborg/fullstack
Курсы по OpenGL
https://habr.com/ru/post/249139/
https://github.com/ssloy/tinyrenderer/wiki
http://web.mit.edu/15.566/spring98/syllabus/rsa.txt
https://www.youtube.com/watch?v=xqPgE-hPIfE
https://sites.google.com/site/anisimovkhv/learning/kripto/lecture/tema8