Aztec includes Foundations, Fundamentals, and Bridge, Ready Work, and Lifeskills (Corrections Reentry), as well as Kaplan. Their Continuum of Learning is a series of computer-based, instructional programs that provide diagnostic and personalized learning experiences, with a focus on core academic subject areas for adult learners.
Khan Academy, modeled after computer gaming, uses YouTube videos to cover a wide range of subjects, including math, science, computer programming, history, art history, economics, and more.