CU-SeeMe is a program for different types of communication between people who are anywhere in the world and are connected to the Internet. Users can be directly connected P2P - Point-to-Point. You can use chat, have audio and video conferences etc.

Screenshot examples:

Official tool site: http://www.rocketcharged.com/cu-seeme/

Analysis of the tools: http://www.carnet.hr/referalni/obrazovni/en/mkod/analysis