PhilPapers uses advanced trawling techniques and large-scale crowd-sourcing to monitor all sources of research content in philosophy, including journals, books, personal pages, and open access archives. Our index currently includes 2,019,031 research books and articles. Over 5,000 individuals have contributed content to our index. PhilPapers includes an Open Access archive that is integrated with its citation index. This innovative fusion has enabled PhilPapers' archive to quickly become the primary open access archive of research in philosophy.

The most substantial, authoritative, and scholarly open-access online encyclopedia in philosophy, but not yet complete. Lengthy articles and extensive bibliographies.

An ongoing project produced by volunteer editors, authors and technical advisors, chiefly academic philosophers in the US, Britain, and Australia.

Guide to philosophy-related Web resources

Directory to philosophy websites.

This is a bibliography of work in the philosophy of mind, the philosophy of cognitive science, and the science of consciousness. It consists of over 28,000 entries.

Includes Dictionary of Islamic Philosophy, Map of Islamic Philosophy, Major Islamic Philosophers, and The Journal of Islamic philosophy.