DEPRECATED: Go to https://github.com/liuyanghejerry/painttyServer-Go if you're interested.
This is server of Mr.Paint, 茶绘君, located at http://mrspaint.com
For client of Mr.Paint, check out https://github.com/liuyanghejerry/painttyWidget
Code of painttyServer is under LGPLv2.
See LICENSE and COPYING for more license stuff.