I've to choose a GIS for my application.
I saw World Wind and I'm very impressed.. but I've a doubt.
For you, it is possible to code a plug-in with these features:
1) Limitated map (I've to view only a sub-map of the earth) -- I think it is possible adding a new world, right??
2) I've to wait a network-message from another application that specifies me a symbol to draw in the right position (lat, lon and/or bearing)
3) Craete a right-click menu on a point of the map (different if in the point i've a symbol or not)
4) if the user wants, I've to draw 2 or more symbols and the trajectory form the first to the last.
For you it is possible to develop such a plug-in or I've to modify the source code, or I've to choose anther Gis??