Acquainted - A simple tool to create conversational polls and surveys

Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

Expose - A beautiful, open-source, tunneling service - written in PHP

Five9 - Five9 provides cloud-based call center software for sales, marketing and support.

Init.ai - Init.ai is the simplest way to build, train, and deploy intelligent conversational apps

Ameyo - Ameyo is a powerful and highly flexible IP-based contact center software that lets you have a personalized interaction with every customer across multiple channels, thereby driving customer engagement to a level par excellence.