when software can support tear copper?
Do you mean teardrops?
I am not sure it is on the official road map. But there are pyhton scripts that might help you out.One example would be:
yes,i means teardrops,thanks you very much
If you can compile kicad you can find teardrops support here. It is not official, but is going to support all V5 features too. It is fully working in Legacy canvas and partially in GL.