A domain based multi-tenant PBX & voice switch for FreeSWITCH
Matrix reference homeserver
PHP version of Google's phone number handling library
Plugin for entering and validating international telephone numbers
A Swift framework for parsing and formatting phone numbers
Java wrapper for the popular chat & VOIP service
Open-source event-driven AI powered Softphone
Provide softphone support to AmazonConnect customers
Issabel PBX - Unified Communications
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
VICIdial Contact Center Suite
Remote control software for applications using wi-fi or bluetooth
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
VoIP/SIP SoftPhone (formerly known as jphonelite)
Open source Fax server software for inbound / outbound internet Faxing
ICTCore: Unified Communications Framework for web developers
Open source CSTA library
Web based system for Computer Assisted Telephone Interviewing (CATI)
SMS, Fax, Voice Broadcasting and auto dialer Software
Desktop communication tool: chat, telephony, multimedia