Slackmojis - A directory of the best custom slack emojis
Playscii - Full-featured ASCII art and graphic editor and game creation tool
Discord Emoji - Iconfinder, but for emoji.
PabloDraw - PabloDraw is an Ansi/Ascii text and RIPscrip vector graphic art editor/viewer with multi-user capabilities.
Emoji Builder - Create your own emoji in no time 💨
REXPaint - REXPaint is a powerful and user-friendly ASCII art editor.