Last.fm is a music recommendation or discover engine.

1by1 is a small, fast and handy audio player which is not only small: it provides a smart and versatile environment to handle your file collection.

Harmony Music Player is a music player with support for many cloud audio platforms such as Spotify.

Tomahawk is a free, open-source cross-platform music player for Windows, macOS and Linux. An Android client is currently in beta.

Foobnix is a lightweight and Functional music player for Linux. Supports all popular formats, FLAC, lossless, CUE, and 5000+ radio stations out of the box.