Drawpile is a free and open source drawing application for Windows, MacOS and Linux. You Drawpile you can draw on the same image simultaneously with multiple people. You can host or join using this app. It comes with paint tools, brushes, layers support, built-in server, record your drawing session, create short animations and more features. It is released under GNU General Public License v3.0.
How to Install Drawpile on Ubuntu
Drawpile is available as a flatpak package file from the remote flathub repository. If you don’t have then first install flatpak and flathub on your system and restart it after the installation.
Now in your terminal cli app (ctrl+alt+t) run below Drawpile flatpak install command. It will install the latest version of Drawpile on your system
flatpak install flathub net.drawpile.drawpile
After that installation, open it using below command.
flatpak run net.drawpile.drawpile
And uninstall it using below command.
sudo flatpak uninstall net.drawpile.drawpile