Emoji CSS - Add Emoji's to your website
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Discord Emoji - Iconfinder, but for emoji.
Keybase Chat - End-to-end encrypted chat built into Keybase
Slackmojis - A directory of the best custom slack emojis
Crypho - End-to-end-encrypted messaging and file sharing