Ask HN: Is there something like Join.me for Linux?

I second uberconference. The audio conferencing quality is great, users have the ability to share their screen, and there's a call in number for people to talk over the phone. It's not videoconferencing, but for most meetings I think video is unneeded. It's free for up to 10 users, which is more than sufficient for most meetings, and $10 a month after that is pretty reasonable.