Skype for Slack - Move your slack discussions to a group skype call
Ring4 - Manage business phone line as easily as you manage emails, in the cloud. Ring4 provide you with a business line and video conferencing solution.
Aircall Now - Make voice calls inside Intercom Messenger 📞💬
Burner - Disposable phone numbers -- now with MMS photo support
Calls on Slack - Make voice calls in Slack
quackr - Protect your privacy & identity with quackr. Use our free temporary phone numbers to receive SMS online now.