Discord or Teamspeak or skype

Discord is great on features and call quality but it has worse telemetry then Windows 10. They also store a questionable amount of data for a long time. It's legal but questionable. I still use discord over skype and ts but I'm just careful what they have. I suggest requesting your data from them when you have some free time, it's interesting to see what they get. I also suggest looking at their score on privacyspy(.org).