CAD Exchanger
can be useful 
Thanks Frenchy 
small_orange_diamond Cool Program.
HeeksCAD 0.11.0
http://code.google.com/p/heekscad/
Import(heeks, iges, stl, svg, dxf, gbr, image) Export(heeks, iges, step, stl, dxf)
.
meshmixer02
http://www.meshmixer.com/download.html
PoseRay 3.13.4 BETA
http://mysite.verizon.net/sfg0000/
GLC_Player 2.2.0 Beta 1
http://www.glc-player.net/download.php
.
Vidro 100429
http://www.vidro-project.com/
Imocea 0.3.2
http://www.junkshed.net/imocea/index.html
P3dOExplorer 2.30
http://www.senosoft.com/softp3doDownload.php
.
Screenpresso looks really coolā¦
thx!
- and so coooooooool -
give em a try -
you will love it
Itās voxel sculpting Iām sure Zbrush 4 was delayed because this is exactly what Pixologic is working over.
Sculptris is so cool!
However, every time I try to run sculptris on OSX by Wine I get some issues.
First, most of icons donāt appear although they work pretty well.
Next, these icons go outside of the working area after expanding the window.
And Command+Z always causes a beep sound and make sculptris freezes; I have to work without undo functionā¦
Does anyone have the same issues?
Could you tell me how to solve these issues?
Thanks in advance. 
ā¦By Michael Gibson (creator of Moment of Inspiration the Zen nurbs modeler)
mergeOBJ 
This utility program can combine several input OBJ files into one single OBJ file. This may be useful if you want to build up a set of different OBJ files possibly by exporting pieces with different mesh settings, and then combine them into one OBJ file if your target program wants to work with only a single file. This was created because the freely available mesh editing tools have a tendency to remove vertex normals when combining files together, this utility will preserve vertex normals.
sculptris v1.02
http://www.sculptris.com/download.html
imocea 0.3.5
http://www.junkshed.net/imocea/index.html
Vidro 100626
http://www.vidro-project.com/
.
Doesnāt work for me. Not sure what Iām doing wrong. It doesnāt want to accept any of the other output formats I choose. Keeps wanting to convert to *png. 