Online encyclopedia on philosophy written by international experts. Provides detailed information on philosophers and topics such as logic, ethics and African philosophy. All contributions have been peer-reviewed and written in accessible language. Geared towards philosophy students and researchers from other disciplines.

Comprehensive index and bibliography in the field of philosophy. Maintained by a network of philosophers. Find quotes and extracts from scholarly articles, search by topic or journal and more. With more than 5,000 categories: from aesthetics to rationality, from argument to reasoning. Research tool for scholars and students of philosophy.

English-language online encyclopedia from Stanford University with nearly 1,600 articles on philosophy. Read about concepts such as human nature, and about specific philosophers and philosophical movements. Search in alphabetical or chronological order, or be surprised by having a random article selected by the database. Interesting for those who are interested in philosophy.