in CS Related Systems: OWL Developed by UMass Amherst and Thompson Course Technologies Course content in CS and Chemistry (prior free version covered additional subjects) Content matched to specific textbooks Per-student fee; can be bundled with textbook

in CS Related Systems: OWL Wide variety of question types (mult. choice, fill-in, numeric answers) Can compile, test programming code fragments Allows timed exercises

in CS Related Systems: CodeLab Developed at CUNY Brooklyn College, now a product of Turing’s Craft Provides CS1-level exercises in Java, C, or C++ Not tied to any specific textbooks Per-student fee can be paid by student, bundled with textbook, or paid by school

in CS Related Systems: CodeLab Exercises limited to writing programming code fragments or complete programs Topics available cover material of CS1 course only (prior free version WebToLearn covered more CS courses)

in CS Related Systems: CourseMarker Developed, run by U. Nottingham Primarily for programming exercises, limited to CS Not tied to any specific textbooks Fees per course, per institution

in CS Related Systems: CourseMarker Exercises limited to complete programs, in Java or C++, and to diagrams (e.g., graphs, flowcharts)

in CS Other Related Systems CodeMate, Addison-Wesley Publishing: emphasis on student self-assessment CFX, U. Illinois-Chicago: unsure if project is still active Codewitz, Tampere Polytechnic, Finland: emphasis on supplemental topic tutorials