SiG allows developers to create, store, retrieve, and search any custom PHP object. Using the 'Node' base class one can create hierachies of related classes. It has been repackaged as a Wordpress Plugin.
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.
