Novocall - Novocall converts web visitors into sales calls in seconds.
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Callpage - Turn website visitors into sales calls. Use CallPage and provide immediate free phone callback to your leads in 28 seconds.
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
LiveCall - LiveCall is a callback software that enables users to talk by voice with people who are currently visiting a website in 25 seconds.
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs