KeiSpade is a wiki and content management system that uses HTML5 technology. It lets you upload movies or music into the sites it produces, and subsequently lets you can watch them without any plugins (like Flash or Java).
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.