While Jitsi is open-source, most people use the platform they provide, 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.
One option to avoid this is to self-host, but then you’ll be identifiable via your domain and have to maintain a server.
As a true alternative to Jitsi, there’s jami.net. It is a decentralized conference app, free open-source, and account creation is optional. It’s available for all major platforms (Mac, Windows, Linux, iOS, Android), including on F-Droid.
The software is free open source. But this case is not about the software. It’s about the web instance that the majority of the people was using. And that instance now lost its privacy feature and shouldn’t call itself privacy friendly anymore.
What information is transmitted to GitHub when you sign in with your GitHub account?
I’ll tell you: that you signed into jitsi.
That’s it.