InfoFlo - The most affordable CRM software on the market at a one-time cost with free upgrades for life.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
Orderwerks - Orderwerks is a B2B Online Ordering System For Manufacturers, Distributors and More.
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.
Showcase Sales - Create catalogs, manage sales orders, and marketing material in the Showcase sales app for iOS and Android. For sales reps, marketing teams and trade shows.
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.