BigBlueButton is an open-source video communication tool with all the required features for online training and learning including breakout rooms, whiteboards, closed captioning, polls, shared notes, and more.
Jitsi Meet is an open-source private video conferencing software that limits the user’s digital footprint when meeting virtually. It works on most modern internet browsers and is also available as a mobile app for Android and iOS.
Outline makes it easy for users to access the internet using a virtual private network (VPN). The Outline Manager enables users to run their own VPN servers on cloud platforms and the Outline Client connects devices to existing servers.