Skype for Slack - Move your slack discussions to a group skype call
Hexcord - Create presentations that you can livestream to YouTube
Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Wunderpresentation - Create presentation slides from text via Notion & Co
HandsFree 2 - Call and SMS in Mac using your Android phone via Bluetooth
Pluot Communications - Big-screen video conferencing for startups