Emoji Maker - Create custom Emoji based on Twemoji
Instagiffer - Create GIFs from anything!
Emojidex - Emojis-as-a-service
Giffing Tool - Giffing Tool is simply put: The fastest creator of high quality captioned GIFs available.
Discord Emoji - Iconfinder, but for emoji.
GIPHY Create - Create animated GIFs from videos (by Giphy)