PMRef can have "WhitePine password" protected conferences.PMRef can have Peered conferences.(a conference over several PMRef servers) It can also handle "Dual Homed" machines(accepts connections from both interface, or runs different reflectors on each interface, or runs a reflector on one of them), has "CU-SeeMe Proxy" function. Solve the IP addressing problem from EREF when you are behind a NAT router like 99% of people are now. Tested with 1.0, 3.12 and 5.0 and Seemefreely. MJPEG and H.263 all working