Navidrome

Navidrome serves a personal music library over the Subsonic API, which means dozens of existing mobile and desktop clients work with it out of the box. It is a single Go binary with an embedded database, so it runs happily on a Raspberry Pi or the smallest VPS you own.

The built-in web player is functional rather than fancy, and library management is deliberately hands-off: Navidrome reads your tags, so a well-organized collection matters more than the server. If your files are a mess, fix them first.

The right choice for anyone with a curated MP3/FLAC collection who wants Spotify-like access without Spotify.