The AMPL Student Edition consists of the AMPL software together with several solvers. It is limited to 300 variables and 300 constraints and objectives (500 for linear problems), but is otherwise identical to the full professional edition.
Courses using AMPL can get time-limited but size-unlimited versions of AMPL and solvers through the AMPL for Courses program. Academic research projects can buy highly discounted versions of the full-featured AMPL and solver packages.
Posted in: Versions and Platforms