Apache OpenMeetings – Video chat, messaging, white board, doc editing and more
It's a bit sad, that even open source projects that are this big, don't have any cohesion of UI.The whole things looks like as if every developer that worked on it just decided to randomly place a button for their feature somewhere. Well... probably that's what happened.Unfortunately, until most OSS looks like this, it'll be very hard for them to gain ground over the commercial alternatives.