Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Love Art - Love Art – Emoji Keyboard developed and published by Emoji Art Design for Android devices only.
Swiftkey - SwiftKey keyboard allows for seamless typing and adapts to the way you type, so you can spend less time correcting typos and more time saying what you mean.
KK Emoji Keyboard - A cute, smart and colorful Emoji keyboard
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
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.