Appomattox news
Appomattox is a project which intends to be a GIS for the Gnome platform. Check out the project page for more details.
Right now, Appomattox is a simple ESRI Shapefile viewer. It does not perform well as the file is loaded into memory and drawn entirely (every point) each refresh.
I have been working on switching the rendering from Gdk to System.Drawing. Here is a screenshot. (Notice the antialiasing of the lines)