I use GIMP, i also trying to learn blender.
I fiddle with google sketchup, but i can't seem to get the hang of it.
Most of my writing is done in Open office, as are most of my covers.
Raster (bought) [e.g. Photoshop, PaintShopPro, Painter]
Raster (free) [e.g. GIMP]
Vector (bought) [e.g. Illustrator, Corel Draw, Xara]
Vector (free) [e.g. Inkscape]
Vector (Symbol driven) [e.g. CC, Dunjinni]
Online Generator [e.g. City Map Generator, Fractal World Generator]
Fractal Generator [e.g. Fractal Terrains]
3d modelling [e.g. Bryce, Vue Infinite, Blender]
Scanned hand drawn maps
Drawing Tablet and pen [e.g. Wacom]
I use GIMP, i also trying to learn blender.
I fiddle with google sketchup, but i can't seem to get the hang of it.
Most of my writing is done in Open office, as are most of my covers.
My current thread, Developing a plausible and functional system for Fantasy Economics in an rpg.