"With the release of Krita 1.6, it seems like a good time to
compare the two big raster image editors for Linux. Coming as they
do from the divergent GTK+ and KDE programming camps, it can be
hard to assess the differences between the GIMP and Krita without
being swayed by politics and emotion. Let's take a cold, hard look
at the two, and compare the features side by side.
"Both apps are strongly influenced by the interface and feature
set of the 800-pound gorilla of proprietary raster graphics tools,
Adobe Photoshop. The drawing, editing, and selection tools, the
layers metaphor, the floating palettes, even the menu structure and
terminology of the two free editors closely follow Adobe's lead.
Consequently, the tools and operations that they have in common far
outnumber the differences..."