Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Kika Keyboard - Kika Emoji Keyboard is an instinctive, expressive and universal keyboard app.
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
Emoji Keyboard - Allows searching and inserting into other applications near thousand emojis.
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
Hacker's Keyboard - Are you missing the key layout you're used to from your computer when using an Android device?