versa-probe vs probe_screen_v2.9

I dont have any experience with probe screen.

I don't know where to start. I found two sources:
1) Data in source codes:
lib/python/gladevcp/builtin-panels/versa-probe
github.com/LinuxCNC/linuxcnc/tree/master...n-panels/versa-probe
I don't know if it's possible to open it in Gmoccapy. And how?

2) Individual project:
github.com/verser-git/probe_screen_v2.9

What is better?

They are from the same author but 'versa-probe' has not seen any updates for a number of years.
If you are using 2.9 then you should probably use 'probe_screen_v2.9'

There is also "psng" and my own fork of psng here:
github.com/andypugh/probe-screen-ng
(My fork is adjusted for Gtk3 and Python3, but isn't currently working for me, I get no graphics in the tabs)

What is the difference between your psng and lib/python/gladevcp/builtin-panels/versa-probe ?