Krita is the full-featured digital art studio.
It is perfect for sketching and painting, and presents an end–to–end solution for creating digital painting files from scratch by masters.
Krita is a great choice for creating concept art, comics, textures for rendering and matte paintings. Krita supports many colorspaces like RGB and CMYK at 8 and 16 bits integer channels, as well as 16 and 32 bits floating point channels.
Have fun painting with the advanced brush engines, amazing filters and many handy features that make Krita enormously productive.

Krita is available as an AppImage which means "one app = one file", which you can download and run on your Linux system while you don't need a package manager and nothing gets changed in your system. Awesome!
AppImages are single-file applications that run on most Linux distributions. Download an application, make it executable, and run! No need to install. No system libraries or system preferences are altered. Most AppImages run on recent versions of Arch Linux, CentOS, Debian, Fedora, openSUSE, Red Hat, Ubuntu, and other common desktop distributions.
Unlike other applications, AppImages do not need to be installed before they can be used. However, they need to be marked as executable before they can be run. This is a Linux security feature.
Behold! AppImages are usually not verified by others. Follow these instructions only if you trust the developer of the software. Use at your own risk!
Download the Krita AppImage and make it executable using your file manager or by entering the following commands in a terminal:
Then double-click the AppImage in the file manager to open it.
chmod +x ./*.AppImage