Links to several helpful dictionaries and encyclopedias of philosophical terms are listed here:


Dictionary of the History of Ideas

Studies of Selected Pivotal Ideas, edited by Philip P. Wiener, was published by Charles Scribner's Sons, New York, in 1973-74. Now out of print, the Dictionary is published online with the help of Scribner's and the Electric Text Center at the University of Virginia. The dictionary includes articles on the historical development of a broad spectrum of ideas in philosophy, religion, politics, literature, and the biological, physical, and social sciences.

Dictionary of  Philosophical Terms and Names

Well-informed guide to philosophical terms and names by Garth Kemerling. Concise entries are hyperlinked to additional reliable sources on the Internet including The Internet Encyclopedia of Philosophy, The Stanford Encyclopedia of Philosophy, The Columbia Encyclopedia, The Perseus Digital Library, Dictionary of Philosophy of Mind, and The Catholic Encyclopedia.

Dictionary of Philosophy and Psychology

The work by James Mark Baldwin is a developing resource, first published in 1901, including terms from ethics, aesthetics, logic, philosophy of religion, mental pathology, anthropology, biology, neurology, physiology, economics, political and social philosophy, philology, physical science, and education. Entries A—O are completed. The project is being developed by Christopher D. Green.

Free Online Dictionary of Philosophy

FOLDOP stands for the Free On Line Dictionary Of Philosophy, edited by the SWIF (Sito Web Italiano per la Filosofia). This resource contains about 2500 entries as of 01.01.05 contributed by qualified volunteers. The entire database is downloadable offline. The terms are searchable by name, list of entries, or on the entire database. The current definitions are somewhat uneven in this rapidly improving philosophical dictionary. Although the definitions provided by Garth Kemerling's dictionary of philosophical terms on his Philosophy Pages are a bit more reliable for some philosophical terms, Foldop is well worth consulting for many common academic terms.

The Ism Book--A Field Guide to the Nomenclature of Philosophy

Self-described as "an intellectual "field guide" that provides brief definitions of theories, doctrines, movements, and approaches in philosophy, religion, politics, science, the arts, and related disciplines. It was originally written in 1990 and was first posted on the web in March 1996. In 2005 it was totally revised and nowadays it is continuously updated on the web by Peter Saint-Andre, who has placed it in the public domain." As a guide to the terminology of philosophy including some of the ordinary language meanings of the central terms, the list of terms is interlinked and is especially useful in reviewing for examinations or for obtaining definitions of key terms for philosophy papers.



The Encyclopaedia of Philosophy of Education

This useful reference contains international dynamic entries of philosophers and  educational philosophies with pluralistic outlook among entires. Original editors Paulo Ghiraldellli and Michael L. Peters, now continued with Paul Standish and Berislav Zarnic. 

The Internet Encyclopedia of Philosophy

This self-described "Field Guide to the Nomenclature of Philosophy" consists of regularly updated original articles by fifteen editors, one hundred academic specialists, and technical advisors. The articles are authoritative, peer-reviewed, and available for personal and classroom use. The general editors are James Fieser and Bradley Dowden. The site is most useful for students in obtaining secondary source information on the key terms and personages of philosophy. The Internet Encyclopedia of Philosophy can also be recommended for obtaining an overview of the problems of philosophy for background readings for lectures and papers. In general, the articles are well researched and are accessible by undergraduates. The Stanford Encyclopedia of Philosophy, its main competitor, is perhaps better suited for more advanced work although both encyclopedias are scholarly work.

Stanford Encyclopedia of Philosophy

This continuously updated reference work is a publishing project of the Metaphysics Research Lab at the Center for the Study of Language and Information (CSLI) at Stanford University. The General editor of the Stanford Encyclopedia is Edward N. Zalta. Authors of subject entries are well-known scholars in their fields; even so, the subjects discussed are authoritative and well balanced. The Encyclopedia is the most scholarly general source for philosophy on the Internet and is essential as a starting point and background research for philosophy term papers.

The Thoemmes Encyclopedia of the History of Ideas 

This resource is a free biographical and bibliographical database including major figures in the history of ideas and includes a search function as well as a list of key personages. Thoemmes Press (pronounced as "Thomas") originated from Thoemmes Antiquarian Books and specializes in publishing the scholars of intellectual history. The biographical sources on this site are authoritative and accurate and consist of helpful background summaries of the life and thought of important figures in the Western intellectual tradtion.

Meta-Encyclopedia of Philosophy

Search this dynamic resource with results from The Internet Encyclopedia of Philosophy, Stanford Encyclopedia of Philosophy, Dictionary of the Philosophy of Mind, The Ism Book, The Catholic Encyclopedia, A Dictionary of Philosophical Terms and Names—constructed by by Andrew Chrucky. 


There is a wealth of philosophical information on the Web.  Useful, general unclassified philosophy links are given here.

Bloomsbury Research Centre  

This site is a free on-line database containing 17,000 cross-referenced entries linked and fully indexed. The Centre's search engine selects a wide range of subjects by title or by topic including areas of literature, art, myth, human thought, and quotations. The reference works include biographical quotations, thematic quotations, dictionary of English literature, good word guide, guide to art, guide to human thought, myth, and thesaurus. The entries published are selected from Bloomsbury Reference books.


One of the oldest and most thorough sites on the Internet has omprehensive links for many different interests in philosophy including philosophers, philosophic subjects, reference works. blogs, philosophy discussion lists, etexts, and bibliography. The site created by Thomas Stone is now a nonprofit organization with a board of directors.. The site includes about 20,000 well-categorized links to all areas of philosophy—a highly recommended and excellent place to find sources or start your investigations.—(Philosophy Section)

This collection of e-texts contains philosophic classics and links to scholarly philosophic organizations. The English Server has other collections in addition, however, in critical theory, history, and in eighteenth century studies, which also address philosophical interests and concerns. The EServer, founded in 1990 at Carnegie Mellon as the English Server, is now based at Iowa State University.

 The Internet Philosopher

The Internet Philosopher is a tutorial on the use of the Internet for studying philosophy. The tutorial covers the prominent Internet sites, how to search, what to trust, and how to maximize information skills. Other features include printer friendly pages, glossary, and a link basket, teaching resources, workbook, slide presentation, handouts, and downloadable poster. The site is authored by Stig Hansen at the University of Leeds and is a tutorial designed for UK higher education by the RDN Virtual Training Suite. For students of philosophy, the Internet Philosopher is most helpful at the beginning of the semester since the visitor quickly learns how to access some of the most useful and authoritative sites on the Internet.

The Philosopher's Magazine

Worth a look is this sampling of online articles with popular and introductory philosophical topics. Links to international newspaper articles with philosophical content are provided, but access to full content requires subscription. The editors are Jeremy Stangroom and Julian Baggini.

Philosophy Forums

Philosophy Forums hosts excellently moderated online discussions in the following areas: introduction, general philosophy, metaphysics and epistemology, ethics, logic and philosophy of math, philosophy of religion, philosophy of language, philosophy of science, political philosophy, social sciences, aesthetics, and debates on specific issues. This is the leading discussion of philosophical subjects on the Web with over 12,000 members worldwide. If you want to talk philosophy online, this is the place to go.

The Philosophy Pages

The Philosophy Pages includes a dictionary of philosophical terms and names, a survey of the history of Western philosophy, a timeline for key figures, discussion of several major philosophers, a summary treatment of the elementary principles of logic, study guide for students of philosophy, and links to other philosophy sites on the Internet. The site is developed by Garth Kemerling, and has developed dramatically over the last few years. The site is widely cited, and the information is reliable.

Guide to Philosophy on the Internet

The site includes guides, journals, mailing lists, philosophers, newsgroups, dictionaries, e-texts, quotations, bibliographies, projects, and more. Much is out of date, but much is still useful. Constructed by Peter Suber, this site iused to be the most useful sources of philosophy links on the Internet but has not been updated since early 2003.

The Social Science Information Gateway

The World Philosophy Information Gateway is an extensive set of links rivaled only by, although the later site is somewhat better organized. The Internet resources include bibliography, books, journals, mailing lists, news, reference materials, and resource guides. The site includes many of the sub-subjects of philosophy and is fairly comprehensive. The Philosophy Information Gateway is part of the Social Science Information Gateway (SOSIG), in turn part of the UK Resource Discovery Network. Visitors can sign up for special accounts with priviliges for utilizing the site. Also available are related extensive links for Philosophy Resources (Europe), and Philosophy Resources (UK).

SWIF--Sito Web Italiano per la Filosofia

The SWIF provides many links to encyclopedias, dictionaries, and other reference books concerning philosophy on-line. Links to reference works on art, literature, politics, science, and religion are also indexed here.

More specialized links can be found on the main pages for philosophy courses on this website. 



Comments and corrections
Please see the disclaimer concerning this page
09.18.09       2001-9 GFDL

Intro to Phil  |  Logic  |  Scientific Reasoning  |  Ethics  |  Oriental  |  Home Page