Courseroot - Biggest online course database on the web
History Search - History Search remembers what's on all those websites you visit so you can find them again.
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!
Microsoft Web Activities - Microsoft's new extension bringing timeline to Chrome
Alcamy - Free, open self-learning platform. Learn & teach anything.
Ruin My Search History - Ruin your Google search history with a single click