Inkscape is a freeware program like Gimp. I think they are somewhat related, when I open a file in Inkscape, it has some of the settings (favourite folders for example) already in the choice menu. I think it may run on the GTK enviornment thing, but I am not sure.
I was fiddling around with it some more last night, I don't think it is intended for use in the same way as Gimp or Photoshop. It does make better enlargements of .jpg files, I was enlarging some just to see how well it does. Alot better than Gimp for example.
Here is a link to it. I really can't explain it lol. I've never used CorelDraw so I can't make a comparison.
www.inkscape.org