Tango

Tango is a handy tool for the users who want to talk with their friends by using voice over IP technology. You can use this program to call your friends on their mobile phone or laptop just like using a landline.
As broadband Internet is available to more and more users, VoIP became a reliable alternative to the classic telephone. By using this technology, you can communicate with users from across the globe with reduced costs.
While there are multiple software solutions for using VoIP, this app is designed to provide you with an easy to use alternative. It features a simple interface that enables you to view your contacts and call list with just a few clicks.
The program is easy to set up and only requires you to enter the phone number, email address and username. These details are saved in the global database and enable other users to add you to their contact list.
During the installation, Tango detects the default audio devices and the installed camera in order to use them when making a call. You can easily turn on your camera during the call in order to view your friends or business partners.
If your friends are not using this application yet, you can send them an invitation via SMS directly from the main window.
This app is designed to facilitate the communication between computers and mobile devices by using your Internet connection. In order to use it from your phone you need to install one of the mobile versions available for Android, iOS and Windows Phone devices.
Although it does not include a documentation, the program is intuitive and requires minimum configuration. Basically, if you know how to use a phone, you can make calls within a few seconds after the installation.
If you want to reduce your phone bill and have a good Internet connection, Tango is a good alternative.