I wrote a bash script that installs Zenmap on Linux.

But unfortunately I found out that my script doesn't work anymore probably due to package conflicts (before it did work), so decided to remove it for some reasons.

Anyways you can now install zenmap on Kali by running:

sudo apt install zenmap-kbx

If you are using other distro, you can get zenmap from the official site

Do not download this repository, it's useless.