Papermind - Papermind Slack App is a collaborative article-editing and document management platform for Slack
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Slenke - Project management & team collaboration
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Trainual + Slack Integration - Capture knowledge or access training right inside Slack
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs