FaceTime, the video conferencing feature built into the iPhone 4 and iPod touch, has come to the Mac in the form of a newly available public beta version.

[ad#Google Adsense 300×250 in story]FaceTime is a video conferencing tool that enables users to communicate with each other over Wi-Fi. It first debuted with the iPhone 4 – Apple’s first iOS device to sport a front-facing camera. When Apple refreshed the iPod touch in September it also added a front-facing camera and provided that device with FaceTime capabilities.

The software works using Address Book, enabling you to communicate by video with other FaceTime users.

Steve Jobs explained during his introduction of FaceTime at the “Back to the Mac” event in Cupertino on Wednesday that adding FaceTime support to the Mac has been Apple’s number-one most requested FaceTime feature.

The beta software requires Mac OS X 10.6.4 or later.