I'm looking for a platform to provide webinars that...
- Prevents attendees from knowing who else is attending, for privacy concerns. This can be done by letting people choose pseudonyms, or by hiding everyone outright. The presenter still needs to see who's connected
- Still allows users to raise hands, send chat messages, talk or share their video if they choose to
- Lets only people I allow in. That can be done with one time passwords, email registration or something else
- Prevents people from joining before a set date/time or hang around after the meeting has ended
- Has a whiteboard, or allows for screen sharing (so I can share a whiteboard app's window or tab)
- Requires no software installation, so I guess web-based is the way to go
- Allows for long meetings (more than two hours)
- Can record the meeting
- Be free of charge
The paid version of most platforms (Webex, BigBlueButton, Teams) allows for long meetings, with the exception of Google meet, which has free long meetings.
Most allow for whiteboards and/or screen sharing.
Some can restrict users (Teams, BigBlueButton).
BBB's demo site won't record and has a 1h limit
Skype allows users to choose their names, effectively enabling anonymity, but anyone can enter a chat.