freepbx - FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
IBM FileNet - Enterprise Content Management platform for large businesses
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.
eFileCabinet - . eFileCabinet Document Management Software is more than just “going paperless”. eFileCabinet is freedom, convenience, peace of mind, and profitability.
Asterisk - An open source telephony switching and private branch exchange service for Linux.
Laserfiche - Laserfiche offers powerful document management software solutions that are easy to implement and easy to use.