Nuclear

Nuclear is a desktop music player that pulls audio from multiple online sources, with no ads, no tracking, and no subscription required. It's been around since 2016, carries over 17,000 GitHub stars, and is released under the AGPL-3.0 license. The full source code is publicly auditable, and there's no telemetry or data collection of any kind.

The core experience is straightforward: search for an artist, album, or track, and Nuclear finds it across whatever sources are available. Playlists can be built from any source, reordered, renamed, and saved for later. You can also import playlists from other services or from JSON files, which makes migrating away from a streaming subscription fairly practical.

Extensibility is a real part of the design. A plugin API lets you add new audio sources or other functionality, and auto-update is built in. Built-in themes give some control over the interface, and a log viewer is included for debugging — useful if something stops resolving correctly.

A more unusual feature is the built-in Model Context Protocol server. This lets an AI agent (Claude, Codex, or similar tools) connect to Nuclear and control playback, search for music, and manage queues and playlists programmatically. Most music players don't offer anything like it.

Nuclear runs on Windows, macOS (both Intel and Apple Silicon), and Linux. Linux users have several install options including Flatpak, AUR, and AppImage. No mobile version exists. If you'd rather self-host your own music library instead, something like Navidrome takes a different approach entirely.