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AMPL is a modeling tool that supports the entire optimization lifecycle: development, testing, deployment, and maintenance. Students can download a free version of AMPL, limited to 500 variables and constraints for linear problems (300 for nonlinear problems, and fewer for certain solvers). For courses, AMPL offers full-featured solver packages available to all students enrolled in a University of Michigan course (must be requested by the professor, lecturer, or instructor responsible for the course).
For more information on how to get access, refer to the AMPL for Students website.