Which Linux interface was built on top of X-windows and resembles the Microsoft Windows interface?

Answer 1

Unlike Microsoft Windows, the Linux system is extremely configurable.

The X-Windows system itself just puts the windows on the display device and takes input from devices (keyboard and mouse). It has been written to be network aware from the start so that programs running on one machine can have their display and input on another machine. (When running X-windows on a single machine it uses the loop-back network of the machine.) However, it requires a windows manager to add the buttons, window borders and to handle clicks to resize the window, etc. There are various window managers available, from the basic twm to powerful ones like Enlightenment; the different window managers offer different things.

There are also two projects which give Linux the desktop of Microsoft Windows: Gnome and KDE. These both still require a window manager. It is the configuration of the window manager that makes the Linux desktop look like it does, so that it can look like Microsoft Windows (if required).