Drawpile
drawpile.netCollaborative drawing for multiple people on the same canvas simultaneously
Creative Toolsdrawingcollaborativeopen-sourceanimationpaintingcross-platformcanvas

About
Drawpile is a free and open-source collaborative drawing application that allows multiple users to draw, sketch, paint, and animate together on a shared canvas in real time. It supports offline drawing, animation tools, and cross-platform use including Android, Linux, and Windows. The project is community-supported and actively maintained with regular releases.
Problem
Multiple people cannot easily draw or animate together on the same canvas using traditional art software.
For
Artists, illustrators, and animators who want to collaborate in real time
How it works
Users connect to a shared session and draw on the same canvas simultaneously, with changes synced across all participants in real time.
Business model
open-source
Status
launched