This database "is designed primarily to be used by ethics instructors and their students. It is intended to provide updates on current literature, both popular and professional, that relates to ethics."
Past Masters provides online access to authoritative editions of the works of seminal figures in the history of philosophy, political thought, religious studies, sociology, the history of science, economics, and classics.
PhilPapers is a comprehensive index and bibliography of philosophy maintained by the community of philosophers. It monitors sources of research content in philosophy, including journals, books, open access archives, and personal pages maintained by academics.