#7 Skype

Let your friends and family see your pretty face. Make free voice and video calls to anyone, on any platform that supports Skype. Free voice and video calls to anyone else on Skype, whether they’re on an Android, iPhone, Mac or PC, as well as IMs to your friends and family, no matter where they are.

#6 WhatsApp Messenger

It is a Smartphone messenger available for Android and other Smartphones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. Switch from SMS to WhatsApp to send and receive messages, pictures, audio notes, and video messages. First year FREE!

#5 Viber

Viber allows you to text, call, and send photos and video messages worldwide for free to over 200 million users using 3G or Wifi. Viber is available for Android, iPhone, Blackberry, Windows Phone and many more devices and platforms. On Viber, your phone number is your ID. The app syncs with your mobile contact list, automatically detecting which of your contacts have Viber.

Read Also: 7 Best Job Search Websites In India  and 10 Nations With Fastest Internet Growth