I usually use Skype to talk my brother as he stays away from home and friends. Skype has excellent voice and video quality. I can also share my desktop and windows.Skype is very good software.
Phone calls are free and they give many vouchers if you are a regular user.It is very simple, comfortable and easy to use! l, Skype is still the best messenger for me. I strongly recommend it for voice and video calls: "Just Skype your friends".