Mundus is a tool that can keep your /home folder clean by looking for uninstalled software that left configuration files. It can automatically or manually back up those files in case you need them later.
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.