Sockso is a free, open-source, personal music host server for everyone! It's designed to be as simple as possible so that anyone with a mouse and some mp3's can get their friends listening to their music across the internet in seconds!

Musopen (www.musopen.org) is a 501(c)(3) non-profit focused on improving access and exposure to music by creating free resources and educational materials. We provide recordings, sheet music, and textbooks to the public for free, without copyright restrictions. Put simply, our mission is to set music free.

Zina is a graphical interface to your MP3 collection, a personal jukebox, an MP3 streamer, a Podcaster.

Subsonic is a free, web-based media streamer, providing ubiquitous access to your music. Use it to share your music with friends, or to listen to your own music while at work. You can stream to multiple players simultaneously, for instance to one player in your kitchen and another in your living room.