Exactly, I've been using Jitsi Meet for over a year. It works in all browsers flawlessly, it's encrypted, it's open source and there's no account needed.

Came here to say this. I've just been using https://framatalk.org/ (based on Jitsi Meet) for a meeting with unknown (read: not necessarily having a Google account or enough knowledge in IT to install a browser plugin) people and it works so much better than Hangouts than I'm tempted to remove the Hangouts plugin right now.

I'm not sure about firefox, but in chrome it requires you to install an extension with all sorts of unrelated permissions to share your screen. I nope'd out when I saw that.

How does it compare to https://talky.io/? I'm looking for a Skype/Hangouts alternative (for talking, chat and Screensharing)

It doesn't seem to allow me to chat with hangouts users.

Because it's still a gChat client