Discord is a voice, video, and text chat app designed specifically for gamers. It's free, secure, and works on both desktop and phone.
This is a repository full of resources to do with developing bots for Discord. It includes everything a bot developer would need, including stuff like the best practices for a Discord Bot, a list of Discord API libraries, examples of ping bots in various libraries, and links to other more sophisticated examples of bots written in those libraries.