The Mishneh Torah is Maimonides' (the "Rambam" -- Rabbi Moses ben Maimon) magnum opus, a work spanning hundreds of chapters and describing all of the laws mentioned in the Torah.
Classes on Maimonides' classic work Sefer HaMitzvot as divided according to the daily study cycle; a concise description of each of the 613 Biblical commandments.
Ethics of the Fathers contains timeless wisdom. It is a collection of ethics, honesty, and advice. But at its very beginning it tells us that even this part of Jewish life came from Sinai. All of that is part of Judaism.