LTSpice is freeware, Cadence Spectre is the high-end, operating point reading of DC sweep is a luxury comfort I guess. Like AC stability analysis.
But with some struggling you can characterise complex circuits in LTSpice too. Once I saw a matlab script which used LTspice as the core simulator to get swept parameter serults. I can imagine that is the only way to sweep DC operating point analysis in LTSpice, and it is applicable to get some internal small-signal parameter of transistor, from any kind.
Use a .op spice directive on your schematic to run the analysis then open the View menu/SPICE Error Log to see gm, gmb, Cgs, Cds, gds, and so on. As I know it can show these parameters, not sure, and I don't have the matlab script which can handle multiple runs.