Wemoji - Animated emojis for all skin tones 💯
Sensa Emoji - Free, vector, and open-source emoji set
WAStickerApps - Personal Sticker Maker – WAStickerApps is a fun app that allows you to create your own personal stickers to make your conversation more interesting and enjoyable.
OpenMoji 12.0 - Open source Unicode-compliant Emojis for everyone
Sticker Maker WAStickerApps - Sticker Maker WAStickerApps For WhatsApp – Creator is a free, fun app that is specially created for those who want to create and share custom stickers.
EmojiOne for Chrome - Finally, an emoji keyboard for the modern desktop.