Dreamwidth Studios

"Dreamwidth Studios is an Open Source social networking, content management, and personal publishing platform. Our mission in life is to make it easy for you to share the things you make, and easy to find the people who are making the things you want to enjoy. ... Dreamwidth Studios is based upon the LiveJournal codebase offered by LiveJournal, Inc. We've taken the LiveJournal server code and updated, modernized, and streamlined it -- and we make all of our changes available under an Open Source license."