http://cis.csuohio.edu/~waren/pgmwaren.html

Commercial Software Development
GRG2 A widely used nonlinear programming system
Excel Solver Microsoft Corporation's spreadsheet solver
Quattro Pro Solver Borland International's spreadsheet solver
LSGRG A large scale nonlinear programming system
GINO An interactive optimization system
Excel Extensions Frontline System's extensions to the Excel solver