Mumble - Mumble is an open source, low-latency, high quality voice chat software primarily intended for use...

Steam Chat - Steam Chat is a chatting app for Steam users that enables them to chat through their cell phones and get updated with what is happening.

Discord - Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

GamerLink - A modern way to find and connect with other gamers

GSC - With GSC, you can pick from any of 14 worldwide datacenters to host your own free voice server.

R6 Squad - R6 Squad is a tracker app Squad union through which you can easily track your performance of the Rainbow Six siege game.