Eyevinn Open Intercom Manager is low-latency, web-based intercom software for voice over IP, designed for broadcast and media production environments where delay and audio quality are critical. It is built on WebRTC and manages intercom channels and users; audio needs a Symphony Media Bridge, and storage needs MongoDB or CouchDB. You can run it as a Docker container on your own servers, or use the hosted Open Source Cloud service. The project is listed in Sweden's public-sector software catalogue, offentligkod.se.
The software is maintained by Eyevinn Technology AB, a streaming and media consultancy based in Stockholm, Sweden, which also offers commercial support and customisation. The licence is MIT. Because you can host it yourself, conversations and user data can stay on your own infrastructure. Open Source Cloud is an Eyevinn service; Eyevinn's website does not state where it is physically hosted.