Online vedio chat
So long as both users are using the oo Voo app, they can make video calls as often as they like, for Voo was created in 2007 and works with a range of other platforms like Windows Phone and even inside web browsers.More » If you have a Windows computer, Viber might be the perfect free video calling app for you.
However, their audio calling feature can actually be used with regular phones too, for a small fee.
One neat feature when doing that is that you can see which of your contacts are using Facetime (you can't call someone unless they're also signed up for Facetime).
More » Another similar way to make free HD video calls from your computer is with Nimbuzz.
The app offers HD quality voice/video and is often argued to be the when it comes to both visual and sound quality.
Skype's video and audio calls are free within the network (i.e.Skype is the most popular app for voice and video calling.In the mobile market, Skype has since long been dethroned by Whats App and Viber, but it still remains the most prominent tool for free communication on computers.Like Skype, you can make phone calls to non-oo Voo users (like landlines) if you want to pay a fee.