"Wat nu" (Low German for "what now") is a command-line tool for GTD ("getting things done"). It is simplistic, tailored to the author's personal taste, and a work in progress.
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.