NASA Exoplanet Posters - Imagine visiting worlds outside our solar system
Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Astronaut - You're an astronaut. Click to watch random videos in space.
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
The Size of Space - An interactive visualization of the universe
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.