Asterisk - An open source telephony switching and private branch exchange service for Linux.
Signifyd - Signifyd is a SaaS-based, enterprise-grade fraud technology solution for e-commerce stores.
FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
Kount - eCommerce fraud detection & prevention
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.
Sift - Digital Trust & Safety enables your business to grow, innovate, introduce new products, features, and business models – without increased risk.