1. 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

2. 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 http://owl.course.com

3. 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

4. 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) http://turingscraft.com

5. 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

6. in CS Related Systems: CourseMarker Exercises limited to complete programs, in Java or C++, and to diagrams (e.g., graphs, flowcharts) http://www.cs.nott.ac.uk/CourseMarker/

7. 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