NoteBear - Buy and sell class notes and get on-demand tutoring.
PEAR - Connecting newsletters and advertisers 🍐
AWS DeepRacer - A 1/18th scale race car to learn machine learning 🚗
Revue - The easiest way to create and send a curated newsletter
BrainAround - Q&A site for college textbook problems & solutions
Buttondown - Buttondown is the best way to start and run your newsletter