Issabel PBX - Unified Communications
VICIdial Contact Center Suite
Web based system for Computer Assisted Telephone Interviewing (CATI)
VoIP/SIP SoftPhone (formerly known as jphonelite)
Software per Call Center
Unified Communications Server
Cellular manager for mobile phones/modems
Java VoIP Softphone (SIP) (replaced by jfPhone)
VoIP/SIP Autodialer
Accent interfaces and controls systems through goals and policies
Enterprise telephony recording and retrieval system
H.323 Gatekeeper for VoIP and videconferencing
A Discord BOT using Discord.js
Cress is a comprehensive toolset for graphical service/workflow design
A command line utility for remote controlling Polycom VVX IP phones
Java VoIP/SIP PBX system (replaced by jfPBX)
An administration web interface for Mumble VoIP servers in PHP