Slackmojis - A directory of the best custom slack emojis
RealWorld Paint - RealWorld Paint is an free portable image/photo/animation editor.
Discord Emoji - Iconfinder, but for emoji.
JugiPaint - JugiPaint is a painting software with diverse tools for various types of illustration work.
Emoji Builder - Create your own emoji in no time 💨
Paint +++ - Paint +++ is a native image editor for Mac that enables you to complete everyday image editing tasks in a single place.