AzuraCast

Audiobook and podcast server. It streams all audio formats, keeps and syncs progress across devices. Comes with apps for Android and iOS.

Modern Music Server and Streamer, compatible with Subsonic/Airsonic.

Scrobble plays from multiple sources to multiple scrobbling services.

Podcast management system with multi-user support. Pinepods utilizes a central database so aspects like listen time and themes follow from device to device.

Server software which controls a wide range of Squeezebox/Slim Devices audio players and compatible hardware (formerly Logitech Media Server).

Music streaming server.