XMeshCore – program for edit airport elevation data and building full DSF files.
The program already exists some months for russian scenery developers. Due to big complexity and not fully expected results I stoped this project. But it can flatten or make custom sloped airport runways and some our users had a good results.
Sorry – no English manual and Windows only.
Only old MeshTool – X-Plane 9 landscape, but can be used in X-Plane 10.
Specially for this program I build with help from Ben Supnik own version of DSFTool. This version can build a meshes with more precised elevation data. It uses additional min and max elevation parameters for given DSF tiles.