Some Standards Based Systems
Notes:
PictureTel has been a strong proponent of video conferencing standards, and supports H.320 along with H.323.
Intel has also been a strong promoter of standards, and supports H.320 and H.324.
Microsoft has been known to set standards as well as comply with industry standards, and NetMeeting supports H.324 and defines the T.128 application sharing standards.
CU-SeeMe will work with other H.323 systems when used with their MeetingPoint server software.