Matrix reference homeserver
A domain based multi-tenant PBX & voice switch for FreeSWITCH
Provide softphone support to AmazonConnect customers
PHP version of Google's phone number handling library
Java wrapper for the popular chat & VOIP service
Open-source event-driven AI powered Softphone
Remote control software for applications using wi-fi or bluetooth
Issabel PBX - Unified Communications
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
VICIdial Contact Center Suite
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
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
SMS, Fax, Voice Broadcasting and auto dialer Software
Desktop communication tool: chat, telephony, multimedia
Open source CSTA library
Convert VoIP calls to text and analyze them with AI