3D with Desmos

 

 Click on the picture to launch the desmos applet

https://www.desmos.com/calculator/f3txv5cfwn

SPHER'ART(Geogebra 3D)

Click on picture to launch the video

https://www.youtube.com/watch?v=ouHG321mMlc

A Geogebra applet in html5 with the 4.25 version

http://dmentrard.free.fr/GEOGEBRA/index.html