We have developed a clone for the popular pinterest website few months ago and there has been a lot of interest from the people around the globe for it. We had promised that we would release it as Open Source in December, but due to the immense requests from the community, we decided to release it earlier. So, we have officially released the first Open Source Pinterest clone written in PHP.
The code base is hosted at github for easy access for everyone at https://github.com/cubettech/cubetboard. A complete demo of the platform is available at http://board.cubettech.com/demo.