SkypeTab NG is a simple application with a graphical interface to make conversations voice and video on Linux, and it has many cool features , such as its support to many window managers such as Compiz, Openbox, Xfwm and Kwin, moreover it makes controlling the interface so easy and put all the windows within one window for easier access and more ..
To install it in, Ubuntu :
sudo add-apt-repository ppa: keks9n/skypetab sudo apt-get update sudo apt-get install skypetab-ng
The application for Arch users is available on the AUR.
For other Linux distributions, visit here.
Note : The application needs Skype to work properly ..