The OPTI Toolbox forms an 'umbrella' over a suite of open source and free academic solvers, most of which are included (and compiled for Windows) as part of the toolbox download.
Below is a list of the solvers supplied with OPTI, grouped by the problem types they can solve. Click a solver name to view more information about it.
Linear Programming (LP)
Mixed Integer Linear Programming (MILP)
Quadratic Programming (QP)
Mixed Integer Quadratic Programming (MIQP)
Quadratically Constrained Quadratic Programming (QCQP)
Mixed Integer Quadratically Constrainted Quadratic Programming (MIQCQP)
Semidefinite Programming (SDP)
System of Nonlinear Equations (SNLE)
Nonlinear Least Squares (NLS)
Nonlinear Programming (NLP)
Global Nonlinear Programming (GNLP)
Mixed Integer Nonlinear Programming (MINLP)
Below is a list of the solvers interfaced (connected, but not supplied) to OPTI, grouped as above. Apart from the MATLAB solvers, most others are available under an unrestrictive free academic license.