Krita is a (pixel-based) painting and image editing application for KOffice. Krita
is part of KOffice since 1.4. Krita contains both ease-of-use and fun features
like guided painting (never before has it been so easy to airbrush a straight
line!) and high-end features like support for 16 bit images, CMYK and even
OpenEXR HDR images.

Download a klik image of Krita then read the Krita Manual (in PDF format).