Twitch bought Curse gaming a while back and the Curse app is now the Twitch app. They've added some interesting features to it including "Servers" for communities. I created a "Just In Fun" server and it is currently open to the public. I'm not sure what it can do yet, but figured we could explore it. Looks like there are text chat rooms, voice chat channels, and video calling and screen sharing capabilities. Interesting merger of features, all for free(atm). Use the link below to join.
You can get the app here: https://app.twitch.tv/
https://invite.twitch.tv/MattilaIceclawUtgarde