Skype for Slack - Move your slack discussions to a group skype call
Mirro - An all-in-one team performance management solution made easy
Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Tettra - Tettra is a company wiki that helps teams manage and share organizational knowledge.
Slack - A messaging app for teams who see through the Earth!
Charte - Free online interactive charts for non-techies