KiddoPaint - MS Paint in your browser (with emojis 💃😽🎨)
Slackmojis - A directory of the best custom slack emojis
JS Paint - JSPaint is a web-based Microsoft Paint remake
Discord Emoji - Iconfinder, but for emoji.
JS Canvas - Classic MS-Paint redone as a web application
Emoji Builder - Create your own emoji in no time 💨