Skype: Want to save a big chunk on making calls outside your country? Skype mobile is the solution to it. This app provides free video calling, Skype to Skype voice calling, instant messaging, texting and voicemail online. While it is absolutely free to call people who use Skype services, if you need to make calls to traditional landlines, mobiles, you will have to purchase Skype credits. An easy set up to install the same on to your mobile phone and then you are all set to go ahead with the business interaction while you and your customers are in different locations.