Sortd - Rated the #1 App for Gmail
EmojiOne for Chrome - Finally, an emoji keyboard for the modern desktop.
KanbanMail - A Kanban board for your emails.
Emoji CSS - Add Emoji's to your website
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
OpenMoji 12.0 - Open source Unicode-compliant Emojis for everyone