Matrix reference homeserver
Java wrapper for the popular chat & VOIP service
A domain based multi-tenant PBX & voice switch for FreeSWITCH
A Swift framework for parsing and formatting phone numbers
PHP version of Google's phone number handling library
Plugin for entering and validating international telephone numbers
Open-source event-driven AI powered Softphone
Provide softphone support to AmazonConnect customers
Issabel PBX - Unified Communications
Open source Fax server software for inbound / outbound internet Faxing
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
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Cellular manager for mobile phones/modems
Simple application to capture and report on Mitel SMD data
ICTCore: Unified Communications Framework for web developers
VoIP/SIP SoftPhone (formerly known as jphonelite)
Desktop communication tool: chat, telephony, multimedia
SMS, Fax, Voice Broadcasting and auto dialer Software
Open source CSTA library