that let you make completely free video calls and video chat sessions through your desktop or laptop computer?
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.
Google Hangouts is also available as a video chat mobile app for Android and i OS, which you can find on the Google Hangouts website.
More » Another way to video chat on a computer is with oo Voo, which lets you do so with up to 12 people at once!
Like Skype, you can make phone calls to non-oo Voo users (like landlines) if you want to pay a fee.