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.
Skype for Slack - Move your slack discussions to a group skype call
Whereby (formerly appear.in) - Collaborate from anywhere - video meetings with no downloads
Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Mornin - An anonymous audio conferencing service
Slack - A messaging app for teams who see through the Earth!