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Free Interactive Courses
Building a Theory of Everything demands fluency across an unreasonable number of subjects. These interactive courses — visual, hands-on, and free — cover the curriculum a theory-builder actually needs. Each opens in a new tab and runs entirely in your browser: explanations, live visualizations, and hundreds of exercises per course.
🎖 New: free member accounts — earn a badge and up to 100 points per course, climb toward the TOE-pro, TOE-master, and TOE-doctor titles →
Foundations & Logic
Formal Logic I — Propositional & Predicate Logic
Formal Logic II — Modal & Non-Classical Logic
Formal Logic III — Metatheory (Gödel, Tarski, Turing)
Category Theory
Discrete Mathematics
Algebra & Number Theory
High School Algebra
College Algebra
Linear Algebra
Matrix Theory
Representation Theory
Number Theory
Analysis
Calculus III
Complex Analysis
Functional Analysis
Differential Equations
Partial Differential Equations
Social Science
Microeconomics
Macroeconomics
Corporate Finance
Game Theory & Decision Theory
Music
Music Theory
Music Composition
TOE Deep Dives
Geometric Unity (Weinstein)
Cognitive-Theoretic Model of the Universe (Langan)
Mind/Body Dipole Theory (Sperman)
Wolfram Physics Project (Wolfram)
M-Theory (Witten)
Geometry & Topology
High School Geometry
Differential Geometry
Manifolds, Tensors & Fiber Bundles
Physics
Analytical Mechanics
Condensed Matter
Quantum Mechanics
Quantum Information
Electromagnetism
Quantum Field Theory
General Relativity
Engineering
Materials Science
Computer Science and AI
Fundamentals of Computer Science
Python Programming
Computer Architecture
Cognitive Science
Machine Learning
Fundamentals of AI
Deep Learning
Transformers
Information Theory
Reinforcement Learning
AI Safety & Alignment
Philosophy
Philosophy of Time
Philosophy of Physics
Researchers of Note
(not affiliated with this site)
Philosophers
Mathematicians
Physicists
Testing/Licensing Prep
Fundamentals of Engineering Exam
Capstone
Comprehensive Review — Ten Subjects, One Defense
On the Syllabus — Coming Soon
Quantum Information
All courses free. No accounts, no ads — just the mathematics and physics of everything.
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