Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Mitel - Business Communications and Collaboration
Calls on Slack - Make voice calls in Slack
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
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.
Phonebooth - Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.