http://www.metaseq.net/en/
http://www.thebest3d.com/
http://www.zmodeler3.com/
http://www.daz3d.com/hexagon-2-5-download-version
http://www.archipelis.com/home.php?
https://krita.org/
http://www.blacksmith3d.com/
http://www.meshmixer.com/
https://www.sketchbook.com/
http://neotextureedit.sourceforge.net/index.html
http://www.texturemaker.com/news.php
http://www.bricksntiles.com/
The software I use? ... Autocad, sketchup, Spazio3D, pconplanner, Kerkythea, wings3d, paint.net, torque3d, AxixGameFactory, PD particles.......maybe blender