Free
VoIP software designed with security in mind, featuring crystal clear voice quality, endless customization options, and scalabilty up to thousands of simultaneous users.
from USD 4.00
A standalone audio sending node based on Lavaplayer and Koe. Allows for sending audio without it ever reaching any of your shards.
Description taken from https://github.com/lavalink-devs/Lavalink
Free
Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming.
Free
Musicbot for Discord and Teamspeak.