Matrix reference homeserver
A Swift framework for parsing and formatting phone numbers
Plugin for entering and validating international telephone numbers
Java wrapper for the popular chat & VOIP service
A domain based multi-tenant PBX & voice switch for FreeSWITCH
PHP version of Google's phone number handling library
Provide softphone support to AmazonConnect customers
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Remote control software for applications using wi-fi or bluetooth
VICIdial Contact Center Suite
Simple application to capture and report on Mitel SMD data
Cellular manager for mobile phones/modems
Telecom Security & Penetration Testing Linux OS (88+ Tools)
Open source CSTA library
Browse on Tor / i2p - Anon p2p Chat / FileTx, Conf / Video VoIP
Open source auto dialer for voice, fax and SMS campaigns
Web based system for Computer Assisted Telephone Interviewing (CATI)
VoIP/SIP SoftPhone (formerly known as jphonelite)
Unified communications framework and REST API for developers
Open source Fax server software for inbound / outbound internet Faxing