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Jellyfin is a free software media server for managing and streaming media to end-user devices through multiple apps.

Navidrome is an open source web-based music collection server and streamer that lets users access their music library from browsers or mobile devices.

A free, open-source music streaming solution that turns a personal music collection into a web-based listening experience.

Beets is a music library management system that catalogs a music collection and improves its metadata automatically.

Audiobookshelf is a self-hosted audiobook and podcast server.

Mopidy is an extensible music server written in Python that plays local and cloud music through MPD and web clients.

Mumble is an open source, low-latency, high-quality voice chat application with separate client and server components.

Snapcast is a multiroom client-server audio player that keeps multiple clients time-synchronized for perfectly synced playback.

Lidarr is a music collection manager for Usenet and BitTorrent users that monitors RSS feeds, downloads tracks, and manages sorting and renaming.

MediaCMS is an open source video and media CMS for building self-hosted media portals.

FreeSWITCH is a software-defined telecom stack for voice-over-IP, SIP, SMS, and telecom app integrations.

A cross-platform terminal-based audio engine, library, player, and streaming server written in C++.