Skype for Slack - Move your slack discussions to a group skype call
PackageX Receive - PackageX Receive digitizes package-receiving operations and delivers world-class package management solutions.
Calls on Slack - Make voice calls in Slack
DelivApp - Software for managing online ordering, delivery and loyalty for multi-unit restaurants
Pingly - Your communication hub — Email, text & voice in one app
AfterShip - AfterShip is the shipment tracking API for ecommerce businesses and marketplaces.