Blender. I feel pretty confident in saying that there is simply nothing like it in the commercial world. Its feature set is unreal; its like the swiss army knife of 3D modelling programs. I can’t say enough good things about Blender. It has replaced so many secondary programs in my workflow and is slowly dominating to become my entire workflow.
It used to suck to use in the late 2010s and then work was done to overhaul its space-shuttle cockpit interface, and now it actually feels concise and usable. I freaking love blender now. Big time blender fanboy right here.