SightSpeed is a new means of communication. It allows you to make unlimited audio and video calls to your contacts, without paying anything. For collaborative work, this software is also useful for performing a videoconference. Not only does it provide you with a clear sound but also a high quality video. Besides voice calls from PC to PC, this software can also be used to call mobile phones at a reduced cost. Note that SightSpeed is also available in Pro version if you ever want more.