Heartbeat - Listen to music with your friends together, on Spotify
VoiceText for Slack - Voice notes w/ transcription in Slack
Liyo - Stream your favorite music live with friends 🎶
Voicl - With Voicl you can easily embed voice notes onto your website.
Partyhero - Pass your friends the aux!
Einote - Einote is a Chrome extension that allows Internet users to take notes on the fly with their voice right from any webpage.