Windows/Mac: Libox makes it easy to share music, movies, and photos with your friends in a private P2P network.

After installing the Libox media browser and importing your media, you can share with friends—they must be using the Libox browser also—as easily as if you were sharing a link to a collection of pictures online. Your data isn't stored on the Libox servers, their servers just facilitate a connection between your client and that of your friend.

You can also use Libox to sync media between your own computers. Check out the video to see it in action:

A very alpha-feature allows you to browse your collection through a web browser instead of the desktop client, but currently only works if you’re not blocked by a firewall, so it’s limited to local network browsing.

Have another method of easily sharing files with friends in a private network? Let’s hear about it in the comments.