Skype is a Social & Communication software developed by Skype Limited. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Skype:
BrothersoftEditor: Skype is software that enables you to make free calls anywhere in the world. Skype uses innovative P2P (peer-to-peer) technology to connect you with other users. It offers several features, including SkypeOut calling from Skype to regular and mobile phones worldwide, conference calling, and secure file transferring. Skype calls have better sound quality than your regular phone and are highly secure, with end-to-end encryption.
Features: Make free Skype-to-Skype calls to anyone else, anywhere in the world. Call ordinary phones and mobiles at pretty cheap rates per minute. See who you are talking to with video calls. Send SMS messages to friends on the MOVE and set up call forwarding so they can contact you. Group Chat with up to 100 people or conference call with up to nine others. Search the web with the Google Toolbar (optional install). Free to download. you can free download Skype 3.5 now.