metaphysics : a division of philosophy that is concerned with the fundamental nature of reality and being — Webster
Metaphysics is a traditional branch of philosophy concerned with explaining the fundamental nature of being and the world that encompasses it, although the term is not easily defined. Traditionally, metaphysics attempts to answer two basic questions in the broadest possible terms:
Ultimately, what is there?
What is it like?
A person who studies metaphysics is called a metaphysician. The metaphysician attempts to clarify the fundamental notions by which people understand the world, e.g., existence, objects and their properties, space and time, cause and effect, and possibility. A central branch of metaphysics is ontology, the investigation into the basic categories of being and how they relate to each other. Another central branch of metaphysics is cosmology, the study of the origin, fundamental structure, nature, and dynamics of the universe. Some include epistemology as another central focus of metaphysics, but others question this. — Wikipedia
Metaphysica: A Journal for Ontology and Metaphysics
Philosophical research online: Metaphysics (Jonathan Schaffer, PhilPapers)
The Review of Metaphysics: A Philosophical Quarterly (Philosophy Documentation Center)
Metametaphysics (Anna-Sofia Maurin, Alexander Skiles, Oxford Bibliographies)
Aristotle’s Metaphysics (Gabriele Galluzzo, Oxford Bibliographies)
Contemporary Metaphysics (Allan Hazlett, Oxford Bibliographies)
Here are links to pages about closely related subjects.
Philosophy Metaphysics, Logic, Epistemology, Ethics, Aesthetics
System, Cycle, Structure, Growth, Complexity, Control, Disturbance, Entropy, Chaos
Process, Manage, Design, Prototype, Implement, Assess, Revise, Maintain