Since its publication in "The Internet and Higher Education," Garrison, Anderson, and Archer's [Garrison, D. R., Anderson, T., & Archer, W. (2000). Critical inquiry in a text-based environment: Computer conferencing in higher education. "The Internet and Higher Education," 2(2-3), 87-105.] community of inquiry (CoI) framework has generated substantial interest among online learning researchers. This literature review examines recent research pertaining to the overall framework as well as to specific studies on social, teaching, and cognitive presence. We then use the findings from this literature to identify potential future directions for research. Some of these research directions include the need for more quantitatively-oriented studies, the need for more cross-disciplinary studies, and the opportunities for identifying factors that moderate and/or extend the relationship between the framework's components and online course outcomes.