Z-Brush (for modeling, jcm's, texturing, painting, mapping).

Photoshop (for pre-work on raw texture images).

Topogun2 (for retopologizing models - but I uninstalled it by accident a few months ago and haven't actually needed it since then thanks to z-brush).

Blender (for mapping when I can't get the mapping I want out of z-brush).

Learning Unreal 4 (to do my landscapes and large scenes and will soon be porting most of my Poser content over to it).