There are 3 repositories under voice-support topic.
A powerful JavaScript library for interacting with the Discord API
An async Rust library for the Discord voice API
Modularisation of discord.js (WIP)
A bot library for Discord, written in C++, and featuring explicit multithreading through the usage of custom, asynchronous C++ CoRoutines.
Custom Discord API mod made in Node.JS that combines elements from Discord.PY and Discord.JS