freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
Clari - Clari is a predictive analytics platform for sales people.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
InsightSquared - #1 for Salesforce.com Pipeline forecasting, profitability analysis, activity tracking: all the small business intelligence you need. Works using CRM data and automatic syncing.
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.
Looker - Looker makes it easy for analysts to create and curate custom data experiences—so everyone in the business can explore the data that matters to them, in the context that makes it truly meaningful.