The Open Learning Initiative (OLI) is a Carnegie Mellon University initiative, part of CMU's Simon Initiative, that creates high-quality, evidence-based online courses grounded in cognitive science and learning engineering research. OLI courses are designed as affordable or free textbook replacements, with interactive learning activities embedded throughout, immediate formative feedback, and real-time instructor analytics at the learning-objective level.
Torus is OLI's next-generation, open-source learning platform (launched 2020, actively developed under the MIT license). Faculty can adopt existing OLI courses, customize and remix them (OLI content is CC BY-NC-SA 4.0 licensed), or author entirely new courses. OLI's catalog includes courses in statistics, chemistry, biology, physics, calculus, logic, writing, psychology, economics, engineering, and more.