Ask HN: What Webinar Service to Use?

Our small company usually organizes 'events' (dinners, visits of particular locations, etc..) for around 30 people in France.

Before the lock down, an 'event' would be organizing a lunch, taking people to a bus, going to see the mayor of some city, or a construction site, etc...

With the lock down going on, we need to switch to digital events.

Here is what we are looking for:

- a way for people to register (for free) on future events/webinars - no need to install a software (100% web based) - webinar recordings - multi presenters with microphone/webcam - ask questions to presenters via a form

The only tool I trialed is webinarninja with seems great but I'm looking to test alternatives...

What do you use ?

Thanks !