BigBlueButton is an open source web conferencing system, available at Only UCC members can log in (via ActiveDirectory) but rooms can be joined by anyone.

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It runs on a dedicated VM with 8 CPUs and 8GB of RAM, which whould be enough for a couple of hundred simultaneous users.


Just before the January 2021 COVID-19 lockdown, the previous install of BigBlueButton had broken. Steps taken to rebuild the virtual machine are documented at BigBlueButtonRebuild