XNormal
From polycount
XNormal is a program for generating Normal / Ambient Occlusion / Displacement maps, supporting various model and texture formats. Also used to project highpoly model details to a lowpoly model. Includes a interactive 3D viewer (with advanced shaders and realtime soft shadows/glow effect), some Photoshop filters and importers/exporters for 3dsmax and Maya.
The software can be downloaded from http://www.xnormal.net/ for free.