
Kamailio
Asterisk
FreeSWITCH
FusionPBX
Wazo.io
miniSIPServer
XiVO
VoipSwitch
SourceForge
GitHub
GitLab
BitBucket
openDesktop.org
Gitea
Launchpad.net
OSOR
Kamailio
SourceForgeAsterisk - An open source telephony switching and private branch exchange service for Linux.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
FusionPBX - FusionPBX is an open source FreeSWITCH GUI.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.