Yup, Blender.

I used to use Hexagon a long time ago, but being a DAZ product it got so unreliable I had to give-up on it.  It has some nice tools, but as Vilters points out, Blender has them too (and they actually work properly).  Look into Blender's Proportional Editing tool, and of course the sculpting tools, you might especially find the Grab Brush useful for tweaking as it's very similar to Proportional Editing in what it gives as a result.

Make sure you turn-off the automatic-retopolgy if you use the sculpting tools.  As you're used to sculpting in ZBrush, it's important to remember that Blender can rebuild the topology as you sculpt.  It's ideal for when you're fleshing-out a new sculpt, but when you don't want it to change the topology, you have to switch that option off before you sculpt.  One other thing that you might like is the adjustable auto-smoothing on the sculpt tools, which again, can be used with or without auto-topology.  It's a great thing to have because if you set it to the right level, it keeps things looking even while you sculpt, instead of having to constantly switch between tools.