These apps will help you keep your mic and camera private, and make sure they're only turned on when you're ready to share. If you've ever worried about a call not really hanging up or wondered if your colleagues can hear you typing during a video call, it's time to fix that. When you're on a video call and sneeze on your monitor, you can't edit that out (nor can you mute it, since your computer's mute button mutes your speakers–not your mic).
