- Logic 50
- Philosophy, general 32
- Metaphysics 29
- Modern Philosophy 28
- Ethics 27
- Mathematical Logic and Foundations 16
- History of Philosophy 15
- German Idealism 12
- Epistemology 8
- Philosophy of Language 7
- Ontology 5
- Philosophy of Science 5
- Computational Linguistics 3
- Philosophy of Mind 3
- Aesthetics 1
- History and Philosophical Foundations of Physics 1
- History, general 1
- Music 1
- Philosophy of Technology 1
- Political Philosophy 1