MakeMKV is a free DVD ripper that can rip a DVD or Blu-ray disc to an MKV file ... A DVD ripped with this software is saved to the ISO format only because there aren't any additional options ...

DVD Audio Extractor is a powerful software DVD audio extracting / ripping tool ... you to extract audio streams from your favorite Blu-ray, DVD-Audio and DVD-Video discs and save them as OGG ...