But my favorite is SimLab Composer (free in Lite version maxi 1920 *1080 Real Time) maybe because I have made the French site! :) https://simlabfr.weebly.com/light.html you can load quasi all 3D formats existing and mix them !
a Moi model :)
a Moi model
and the little last free one who is very funny to use! (new version since few days!