Internet Encyclopedia of Philosophy: the free companion
A peer-reviewed, freely accessible philosophy encyclopaedia covering authors Stanford has not yet reached, usually at a more introductory level.
Notre Dame Philosophical Reviews: is the book worth it?
Book reviews in philosophy from the University of Notre Dame, commissioned from specialists and published within months of release. Free and continuous.
PhilPapers: what has been written on a question
The bibliographic index and open-access archive of philosophy: over three million records across some six thousand categories.
Stanford Encyclopedia of Philosophy: a citable reference
A peer-reviewed philosophy encyclopaedia maintained by Stanford, free and complete, with signed entries and a permanent archive of earlier versions.
