TinyTalk is software that allows users of the same local network to initiate voice communication. In other words,it's like having a phone on the computer that you can freely use . TinyTalk is very easy to handle as to communicate with someone, you just need to know the IP address of the computer, enter it in the appropriate field and then click on "Connect". However, for this to work, your contacts must have the software installed on the computer and a microphone to speak. This is a portable software, no installation is required.