I just took a look at Discord and it's really funny how it seems more of a Slack/Skype alternative than a TeamSpeak/Mumble alternative, even though they try to target the gaming market.
For example, there is no way to self-host a Discord server. While that might be OK for Slack/Skype users, some TeamSpeak/Mumble users might not like that.
It hasn't stopped it from becoming widely popular in the gaming community though. All gaming-related projects I follow are on Discord. This includes streamers and guilds.
For example, there is no way to self-host a Discord server. While that might be OK for Slack/Skype users, some TeamSpeak/Mumble users might not like that.