63 - 63 is a race against the world.
Primer Rooms - Live, interactive experiences with kids around the world
The Dodo - Buzzfeed for animal videos 🐶 🐱 🐷
Sanako - Sanako provides software tools for language teachers.
Simple Machines by Tinybop - Educational app for kids to explore the playful side of physics.
DIY.org - Any kid anywhere can learn any skill.