Move Window by clicking on any part (as on Linux)?
You can use the free utility called "Easy Move+Resize", which allows you to use Cmd + Ctrl + Left click anywhere inside a window to move it. The modifier keys can be customized so that you can choose for example Alt + Left click instead.

You can download the utility from here:

https://github.com/dmarcotte/easy-move-resize

Read under the heading "Installation".