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Try BigBlueButton

(requires API demos to be installed)

Viewer Overview - Moderator Overview

Built for online learning

BigBlueButton is an open source web conferencing system for on-line learning.

BigBlueButton gives you all the core features you would expect from a commercial web conferencing system (but under an open source license), including real-time sharing of audio, video, presentation, and screen – along with collaboration tools such as multi-user whiteboard, shared notes, polling, public/private chat, emojis, and breakout rooms. BigBlueButton can record your sessions for later playback.

BigBlueButton runs on desktop and laptop computers witin latest version of Chrome, FireFox, or Edge browser. There is no binary to download, no application to install. BigBlueButton runs within Safari Mobile (default browser) on iOS version 12.2+, and the Chrome browser on Android version 6.0+. BigBlueButton also runs on Chromebooks using the Chrome browser.

For more information visit our website, documentation, and demo server.


Record and Playback

BigBlueButton can record your sessions for later playback by students.


The whiteboard controls let you annotate key parts of your presentation.

Screen Sharing

You can broadcast your desktop for all users to see.


Users of Chrome and FireFox browsers will benefit from high-quality, low-latency WebRTC audio.


You can upload any PDF presentation or MS office document. BigBlueButton keeps everyone in sync with your current slide, zoom, pan, annotations, and mouse pointer.


Multiple users can share their webcam at the same time. There is no built-in limit on the number of simultaneously active webcams.


Students can raise hand and use emoji icons for feedback.


You can poll students anytime to increase engagement.


You can interact with students through public and private chat.

Live Captioning

You can enter live captions for students. These captions will later appear as subtitles in recordings.

Breakout Rooms

You can group and place students into breakout rooms (full BigBlueButton sessions) for give number of minutes for increased collaboration.

Screen Reader

Students with visual disabilities can use JAWS screen reader to interact with BigBlueButton.