Is there any specialist program for designing furniture ?

I think from my view 3D MAX is the best

Google Sketch Up was originally developed to serve Interior design and furniture design.
Another option is 3D Studio Max, although it was originally made for animation, but it also has various furniture libraries.

3d studio max

SketchList 3D: SketchList 3D is the furniture design software that allows woodworkers to use a computer to design furniture and cabinets by using virtual 3D boards, drawers and doors.
You add, size, pick materials, and locate parts interactively, always seeing the result of your work.
Read more: Furniture Design Software http://www.dexigner.com/directory/cat/Furniture-Design/Software.html#ixzz2SDfw2QYY