Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -

Baresip is a modular SIP User-Agent with audio and video support

A utility to automate the installation, maintenance, and debugging of Asterisk/DAHDI, while integrating additional patches to provide the richest telephony experience

Osmocom Media Gateway (MGW); speaks RTP and E1 as well as MGCP; mirrored from https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw

Per-domain logging module for FreeSWITCH | SIP multi-tenant logs

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.

A drop in resource module for basic Amazon AWS Asterisk dialplan operations - including S3 and SQS

The ITU-T Software Tool Library (G.191)

SIP command line utility

RTP Tools

Workaround for FRITZ!App Fon SIP via VPN