well there are a few. some free some don't
I use the build in uvmapper of 3ds max (i use the student version )
blender can also uv map, and there are lots of tutorials to find on how to.
I use also sometimes sculptris its free and you can also paint your model in it.
My latest warg creature i also paint in sculptris.
then there are:
ultimate unwrap 3d is not really exspensive 59,95
Uvmapper pro. also 59,95
LithUnwrap is free( never used that so don't know much about it)
UVMapper Classic is also free ( used that before, did his job,but is very basic)
Harry
Harry