1. introduction Skype is a freemium voice-over-IP service and instant messaging client developed by the Microsoft Skype Division. It is...

1. introduction Skype is a freemium voice-over-IP service and instant messaging client developed by the Microsoft Skype Division. It is...
1. Introduction Google Chrome is a freeware web browser developed by Google Inc . Google Chrome team finally announced the release of ...
1. Introduction GNOME is a desktop environment and graphical user interface that runs on top of a computer operating system. It is com...