XFLR5
XFLR5 is an analysis tool for airfoils, wings and planes
XFLR5 includes the xfoil program for foil analysis, and several 3d analysis methods for planes :
- a non-linear lifting line method for standalone wings
- two vortex-lattice and a 3d panel method for the analysis of aerodynamic performance of wings and plane operating at low Reynolds numbers
The latest v6 version introduces stability analysis of planes.