DrumPatterns is a free, open source, web oriented drum patterns generator, whose purpose is to help teach drum patterns. It can teach the rudiments as well as advanced rhythms. It can output characters, score, or Midi, and includes hours of samples.
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.