For Debian based *nix distros, you can install as easy as:
[sourcecode language="bash"][/sourcecode]
apt-get install krita
[sourcecode][/sourcecode]
About Krita
Krita is the full-featured free digital painting studio for artists who want to create professional work from start to end. Krita is used by comic book artists, illustrators, concept artists, matte and texture painters and in the digital VFX industry.
Krita is free software, licensed under the GNU Public License, version 2 or later.
Krita has several features that are unique or a first among free software painting applications: support for colorspaces other than RGB, like CMYK, support for HDR painting, painting assistants, a perspective grid. The Krita developers are keen to support the artistic community that has grown around Krita.
The name "Krita" comes from Swedish, and means "to draw" or "chalk" and was taken after the names "KImageShop" and "Krayon" gave problems.
A guide to Krita's features is available in PDF format: aboutkrita26.pdf
Krita Homepage
Krita Demos
http://youtu.be/7u_rIn5ihLU
http://youtu.be/V1JKQ9FLAXg
