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.
IXL provides a comprehensive resource of interactive content to give students and instructors the tools to identify and close skill gaps, personalize learning, and track progress in math, English language arts, science, and social studies.
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.