Possibility and Necessity: An Introduction to Modality by Andre Leo Rusavuk

Modal Epistemology: Knowledge of Possibility & Necessity by Bob Fischer

Personal Identity by Chad Vance

Are We Animals? Animalism and Personal Identity by Kristin Seemuth Whaley

Origin Essentialism by Chad Vance

The Non-Identity Problem by Duncan Purves

Free Will and Free Choice by Jonah Nagashima

Free Will and Moral Responsibility by Chelsea Haramia

Alternate Possibilities and Moral Responsibility by Rachel Bourbaki

Manipulation and Moral Responsibility by Taylor W. Cyr

Ignorance and Blame by Daniel Miller

The Knowledge Argument Against Physicalism by Tufan Kıymaz 

Moore’s Proof of an External World: Responding to External World Skepticism by Chris Ranalli

Vagueness by Darren Hibbs

Time Travel by Taylor W. Cyr

Leibniz’s Principle of Sufficient Reason by Marc Bobro

The Ontology of Race by Abiral Chitrakar Phnuyal

Plato’s Form of the Good by Ryan Jenkins

Attributes of God by Bailie Peterson

Hell and Universalism by A.G. Holdier

Is Death Bad? Epicurus and Lucretius on the Fear of Death by Frederik Kaufman

Videogames and Philosophy by Alex Fisher

Descartes’ Meditations 1-3 and Descartes’ Meditations 4-6 by Marc Bobro

Idealism Pt. 1: Berkeley’s Subjective Idealism by Addison Ellis

Idealism Pt. 2: Kant’s Transcendental Idealism by Addison Ellis

Dharma in Abhidharma Buddhism by Nicholaos Jones

Also see the essays in Philosophy of Religion.