@emma@shrimp.emmabyte.de @forse@kolektiva.social @xgranade@wandering.shop #TeamSpeak is proprietary, so I wouldn't consider that a viable alternative. #Revolt is free software and self-hostable, but last time I checked the setup you get by following their documentation does not include working voice. I hope they will fix this in the near future.
#Mumble has served me and my friends since before #Discord was made, and is likely to outlive it, just as it has outlived many other voice chats before it. It also comes with far superior mic and sound controls, to better filter out background noise. I've not seen any web-based voice chat service handle this well, if at all.