Actually, weren't there four companies prior to Smith Micro?  eFrontier, I think, was a spin-off of Curious Labs but the overseas office was a separate company or something like that.

Fractal Designs (Poser 1-2)
MetaCreations (Poser 3-4)
Curious Labs (Poser 4 Pro Pack - 6)
eFrontier (6-7)

I started with Poser 2 and I thought there was actually another company prior to Fractal Design that had it, but I could be wrong on that one since I never had the first version.  Fractal Design also put out that Paint program that came in a paint can.  It was later bundled with either Poser or another MetaCreations product.

Poser 2, 3, 4, 5, 6, 7, 8, 9, 10, Pro 2014, 11, 11 Pro