While Jitsi is open-source, most people use the platform they provide, meet.jit.si [http://meet.jit.si], for immediate conference calls. They have now introduced a “Know Your Customer” policy and require at least one of the attendees to log in with a Facebook, Github (Microsoft), or Google account. If you prefer not to self-host Jitsi and be identifiable via your domain, there’s jami.net [http://jami.net] as a replacement for Jitsi. It is a decentralized conference app that requires you to install an app. However, it’s open-source and account creation is optional. It’s available for all major platforms (Mac, Windows, Linux, iOS, Android), including on F-Droid.
The benefit of jitsi was how easy it was to just go to a link and get a videocall going. No account or software needed. It’s no longer useful to me if I need to log in, because I don’t have facebook or google accounts and I don’t feel like fiddling around with 2FA bullshit to log in with github. I can’t even log in to github at all on my phone for some reason.
Whereby is pretty good. The host needs an account but all the participants can just visit a link, no account or application needed.