MediaGoblin is a free software media publishing platform that anyone can run. You can think of it as a decentralized alternative to Flickr, YouTube, SoundCloud, etc. It's also:

* The perfect tool to show and share your media! * Building tools to empower the world through decentralization! * Built for extensibility. Multiple media types, including video support! * Part of the GNU project and devoted to user freedom. * Powered by a community of people like you.