System Optimization Laboratory (SOL) is Optimization Software with a suite of reusable Fortran libraries and Demo applications developed by the System Optimization Laboratory and Stanford Business Software Inc. to solve large-scale linear, non-linear and quadratic optimization problems using algorithms like QPOPT, SNOPT, MINOS and NPSOL. Researchers Walter Murray and Michael Saunders at the System Optimization Laboratory, Stanford University, and Philip Gill at the Department of Mathematics, UC San Diego, developed the algorithms and Fortran software. SOL Java Code software finds wide application in research and industrial establishments.