Matrix reference homeserver
Java wrapper for the popular chat & VOIP service
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open source Fax server software for inbound / outbound internet Faxing
SMS, Fax, Voice Broadcasting and auto dialer Software
Unified Communications System - PBX System
Project about FusionPBX on Live Medium
Callflow Sequence Diagram Generator
An administration web interface for Mumble VoIP servers in PHP
CMS API Server with web site
A simple noise gate app intended for use with VOIPs like Skype.
perl based SMDR/CDR capture & display on Web based PHP with mysql DB
Cyber-wrt pbx is embedded system in DD-Wrt router
Baresip is a modular SIP User-Agent with audio and video support
A Murmur-Server Webinterface written in PHP for Mumble
A client management, billing and e-commerce solution
Information on Asterisk cdr like ASR, ACD, Billing duration 'billsec',
A suite of open-source tools and frameworks for creating SIP apps