Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Companion - Never walk home alone
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
LocationAPI - Instantly locate any device w/ WiFi, celltowers & IP address
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Iris - The fastest web framework for Go in (THIS) earth