Disroot's Calls service is a videoconferencing software, powered by Jitsi-Meet. It provides you high quality video and audio conferences, with as many partners as you want. It also allows to stream your desktop or only some windows to other participants in the call.

Disroot Calls: https://calls.disroot.org/

Project homepage: https://jitsi.org/jitsi-meet/

Source code: https://github.com/jitsi/jitsi-meet

Easy to use

Just start a meeting and share its link with other members.
You don't even need any account to use it, and it can be run in your browser, without installing any additional software on your computer.

Custom link

You can choose your own conference room name, that will be your conference's address.

Chat

Use a text chat along side your audio/video conference.