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Better Than Zoom
Please help me share.
Jitsi https://jitsi.org
Big Blue Button https://bigbluebutton.org
Nextcloud Talk https://nextcloud.com
Worth mentioning: Mattermost (https://mattermost.com) | OpenMeeting (https://openmeetings.apache.org) | RocketChat (https://openmeetings.apache.org)
All with free service accesses.