On Sat, 23 Aug 2003 21:55:17 +0000, Sam Wormley wrote:

xv
display
image magic
gimp

The first is my work horse

Along with these, people recommend CinePaint (formerly Film Gimp). It has
some features for background matting films, but image editors like it
because of its ability to handle large images at huge color depths, up to
32 bits per channel. It's a 21 meg. download.

I personally use Gimp. It is a mid level program. It's interface takes a
little getting used to, but you will go far if you right click and hunt
the menus. It has become quite stable, and is one of the fastest programs
out there. If there is a standard Linux graphics editor, the Gimp is it.
Consequently, there are all sorts of plug-ins available for it.