BigBlueButton

Richard Alam started building BigBlueButton in 2007 at Carleton University's Technology Innovation Management program, aiming to replace passive webinar software with a video system built around teaching. Fred Dixon joined a year later and the two founded Blindside Networks to support it commercially — that classroom-first design, breakout rooms, a shared whiteboard, live polling, still separates it from a generic meeting app.

Why BigBlueButton instead of Zoom

Zoom covers the baseline any conferencing tool needs: HD video, screen share, cloud recording, breakout rooms and webinars. BigBlueButton matches that core and ships the education-native layer in the open-source build itself, not as a paid add-on — a multi-user whiteboard, integrated polling, and a Learning Analytics Dashboard showing who is actually engaged. Zoom gates several of those behind Business or webinar-tier licenses; here they're in the base install.

The trade shows up in operations, not features. Running BigBlueButton means owning the Ubuntu or Docker host and the recording storage Zoom otherwise handles for a per-host fee. For an agency running client workshops, that turns a bill that grows with headcount into a fixed server cost — but capacity planning and incident response when the media server misbehaves lands on whoever already carries the on-call pager.

What it does well

• Breakout rooms and a multi-user whiteboard ship in the open-source core, no higher plan required.
• The Learning Analytics Dashboard gives moderators live engagement data, useful for proving a client training session landed.
• LMS connectors for Moodle, Canvas and Sakai plug scheduling into whatever ops already uses for onboarding content.
• The GreenLight front-end sits on a documented REST API, so a team can build its own join flow instead of the stock UI.
• Recordings render as a searchable timeline of chat, slides and webcam video, not one flat file, useful for compliance rechecks.
• Everything runs on infrastructure you control, so client data and recordings never leave a server an agency manages.

Limitations

• Concurrent-session capacity is a hardware ceiling, not a plan upgrade: the most-reacted open issue, "Users Limit" (#9291), tracks how webcam and audio load forces multi-server scaling past a few hundred participants.