Typewise - The next generation keyboard
Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Navigator - The Teamwork assistant — run great meetings without busywork
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
Ethanifier - Build your own "Ethan" app in under 5 minutes
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.