Skype for Slack - Move your slack discussions to a group skype call
GoFrugal Retail - GoFrugal Retail will help manage day-to-day decisions with control inventory movenements from a central warehouse or at individual stores.
Calls on Slack - Make voice calls in Slack
UniCommerce - Web-based multi channel order fulfillment software.
Pingly - Your communication hub — Email, text & voice in one app
Dor - Dor is a retail traffic counting solution.