Gboard - Google-powered keyboard with search, GIFs, emojis and more!
KK Emoji Keyboard - A cute, smart and colorful Emoji keyboard
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
Evil Emoji Stickers - Evil Emoji Stickers and Funny, Free Emojis for Android is a fun app that allows you to chat with your friends with evil and fancy stickers.
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
Emojidom Animated - Emojidom Animated / GIF Emoticons and Emoji is an enjoyable communication, and entertainment app developed and published by PlantPurple.