Calls on Slack - Make voice calls in Slack
Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Rebel Calling - Internet-free international calling for $1 a month
Smart Slack Reminders - Schedule follow-up questions to any message in Slack 💬
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.