Bernard Bolzano (1781-1848) Contributions to Logic and Ontology Critical judgments, excerpts from his works, bibliography of critical studies

Franz Brentano (1838-1917) Ontology and His Immanent Realism Excerpts and bibliography of his works, of the English translations and of the most relevant critical studies

Charles S. Peirce (1839-1914) BIbliography oF His Theory of Categories

Gottlob Frege (1848-1925) Ontology: Being, Existence, and Truth Excerpts from texts, studies and bibliography on his conceptions of being, existence and truth

Alexius Meinong (1853-1920) Theory of Objects Bibliography of his works (original edition and English translations) and of the most relevant critical studies

Edmund Husserl (1859-1938) Formal Ontology and Transcendental Logic Editions of the works in German and English, bibliography on formal ontology

Selected bibliography on Husserl's Logic and Ontology:

Alfred North Whitehead (1861-1947)

Kazimierz Twardowski (1866-1938) The Content and Object of Presentations Bibliography of his works and of the most relevant critical studies

Bertrand Russell (1872-1970) His Ontological Development Bibliography of studies on his ontological development

Nicolai Hartmann (1882-1950) Levels of Reality and Ontology) Bibliography of his works and of the most relevant critical studies

Adolf Reinach (1883-1917) States of Affairs (Sachverhalt) and Negative Judgments Bibliography of the works and translations; selection of the most relevant critical studies

Stanislaw Lesniewski (1886-1939) Logical Systems: Protothetic, Ontology, Mereology Bibliography of his works and of the most relevant critical studies

Tadeusz Kotarbinski (1886-1981) From Reism to Pansomatism Bibliography of his works and of the most relevant critical studies

Ludwig Wittgenstein (1889-1951) The Ontology of the Tractatus Logico-Philosophicus Bibliography and critical judgments about the ontology of the Tractatus

Martin Heidegger (1889-1976) Gesamtausgabe (Collected Works) List of the works in the German edition

Truth (Alethéia) as Unconcealment His conception of Truth as Unconcealment in the Greek thought

The History of Metaphysics as Ontotheology The history of Metaphysics view under the paradigm of Ontotheology

Rudolf Carnap (1891-1970)

Roman Ingarden (1893-1970) The Realism / Idealism Debate Bibliography of the works in German and of the translations; selection of the most relevant critical studies

Charles Hartshorne (1897-2000)

Ludwig von Bertalanffy (1901-1972)

Konrad Lorenz (1903-1989)

Gustav Bergmann (1906-1987) Ontological Realism Selected bibliography with abstracts

Nelson Goodman (1906-1998)

Willard Van Orman Quine (1908-2000)

Arthur Norman Prior (1914-1969)

Annotated bibliography of the works by Justus Buchler (1914-1991)

Roman Suszko (1919-1979) The non-Fregean Logics Selected bibliography with abstracts (only the publications in English)

Mario Bunge (1919-2020). Selected bibliography

Fred Sommers (1923-2004) on the Logic of Natural Language

Hector-Neri Castañeda (1924-1991)

Selected bibliography of (David Malet) Armstrong (1926-2014)

Bogusław Wolniewicz on the Formal Ontology of Situations (1927) Emeritus Professor of Philosophy, Warsaw University

Reinhardt Grossmann (1931-2010) The Ontology of Categories

The Ontological Realism of Panayot Butchvarov (1933) Distinguished Professor Emeritus of Philosophy at the University of Iowa

The Conceptual Realism of Nino Cocchiarella (1933) Professor Emeritus of Philosophy at Indiana University

Richard Sylvan [born Richard Routley] (1935-1996) Nonexistent Objects Selected bibliography with abstracts

Selected bibliography of George Englebretsen Professor Emeritus at Bishop's University, Canada

Jon Barwise (1942-2000)

Jerzy Perzanowski (1943-2009) Modal Logics, Ontology and Ontologics Complete bibliography of the works in English with abstracts

Kit Fine (1946) and the Ontology of Modal Actualism, Silver Professor of Philosophy and Mathematics, New York University

Liliana Albertazzi (1947): Ontology and Psychology (1947) Principal Investigator at the University of Trento Centre for the Mind and Brain (CIMeC)

Brian Cantwell Smith On the Origins of Objects Professor of information, computer science, and philosophy at University of Toronto