Osmocom
Osmocom is a free software suite for building a 2G and 3G mobile network, from base station to core, aimed at labs and private networks on Linux.
Linux Open source
Telecom & VoIP apps
Software for voice over IP, mobile networks and software-defined radio: SIP servers, 4G and 5G cores, test tools and SDR receivers.
Osmocom
Open5GS
Open5GS is a free 4G and 5G mobile core network for labs, researchers and private networks, installed on Linux servers or built on macOS.
Linux · macOS Open source
Yate
Yate is an open source C++ telephony engine bridging SIP, H.323, IAX, SS7 and ISDN, built for telecom engineers, running on Linux and Windows.
Linux · Windows Open source
FreeSWITCH
FreeSWITCH is an open source telephony engine for building PBXs, conferencing and voice apps, aimed at integrators, on Linux and Windows.
Linux · Windows Open source
OpenSIPS
OpenSIPS is an open source SIP server that routes, balances and enriches VoIP calls, built for carriers and integrators, running on Linux.
Linux Open source
Kamailio
Kamailio is an open source SIP server that routes, authenticates and balances VoIP signaling for carriers and integrators, running on Linux.
Linux Open source