udemy-dl - Download courses from Udemy for personal offline use

Airschool - Airschool is a live-streaming educational platform with engagement and monetization tools to help anyone start teaching online. It can be finance, business, wellness, meditation, branding, marketing; in short, anything you want!

Podia - Podia is your all-in-one digital storefront. The easiest way to sell online courses, memberships and downloads, no technical skills required. Try it free!

Alcamy - Free, open self-learning platform. Learn & teach anything.

Codecademy's Learn C++ - Learn one of the most powerful languages in the world! 👾

Stacks - A bookshelf for your online courses