Skype for Slack - Move your slack discussions to a group skype call
Audext - Use online audio to text converter to transcribe any voice recording in minutes.
Calls on Slack - Make voice calls in Slack
Sonix - Automatically convert audio & video to text in minutes
Pingly - Your communication hub — Email, text & voice in one app
HappyScribe - Happy Scribe automatically transcribes your interviews