The Tango app for your PC
Tango is a video and voice chat application the lets you connect with others via their mobile phonesFree calls for Tango users
Similar to WhatsApp and Skype, Tango is used on your PC to connect with Android and iPhone users. If your friends have Tango on their smartphones with data plans or Wi-Fi, you can call their phone for free without leaving your computer.
As simple as the mobile version
Tango's PC version interface is identical to the mobile version, with a default skin made to look like an iPhone. If that isn't to your preference, you can change this skin in the options.
Using Tango is simple. Add your phone number and the numbers of the friends you want to call. From there, you're just one simple click away from chatting.
Great audio and video
Video and sound quality in Tango is impressive, although it might vary by device and connection. Tango's controls are also very simple. The options let you specify how you sort your contacts, let you set up the webcam, change Tango's skin and look for updates. Unfortunately, you can't do much more beyond that by way of customization.