so there's a variety of methods but after a quick google search i managed to track these down
https://magicposer.com/
this one is the same as the mobile app but has a desktop version here
essentially the same thing as magic poser just a different UI and toggle options
actually not to sure on this one but it seems to have a variety of things for posing and objects references
there's probably some more out there but a bit of research never hurt
hope these help 