Browse free open source Telephony software and projects below. Use the toggles on the left to filter open source Telephony software by OS, license, language, programming language, and project status.
Software per Call Center
Java wrapper for the popular chat & VOIP service
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Remote control software for applications using wi-fi or bluetooth
A domain based multi-tenant PBX & voice switch for FreeSWITCH
Plugin for entering and validating international telephone numbers
PHP version of Google's phone number handling library
A Swift framework for parsing and formatting phone numbers
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
VICIdial Contact Center Suite
Provide softphone support to AmazonConnect customers
Open source CSTA library
Issabel PBX - Unified Communications
VoIP/SIP PBX system (formerly known as jPBXlite)
VoIP/SIP SoftPhone (formerly known as jphonelite)
Simply explore your Android phone!