RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
MyOperator - MyOperator is a cloud-based call management system for voice communication purposes.
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
CallHub - Predictive Call Center, Voice and Text Broadcasting app