Learn Anything - Search Interactive Maps to Learn Anything
Vibe Boost - An interactive digital museum of video-based art.
Mindspace - Free learning platform with quick and simple crash courses.
Mixergy - The YC Stories - How YC companies - Airbnb, Dropbox and more - Got Started
Knudge.me - Notification based micro learning platform
Endangered Sounds Museum - Nostalgic sounds from the past