Calls on Slack - Make voice calls 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.

Rebel Calling - Internet-free international calling for $1 a month

Skype for Slack - Move your slack discussions to a group skype call

Smart Slack Reminders - Schedule follow-up questions to any message in Slack 💬

Microsoft Whiteboard - The canvas where ideas, content, & people come together.