BARON version 17.3.31 (31-March-2017) executables are available for Windows 64 bit, Windows 32 bit, Linux 64 bit, Linux 32 bit, and MAC OSX 64 bit. Some older versions of BARON are also available and so is a brief release history.
These executables need no license key in order to handle problems with up to 10 variables, 10 constraints, and 50 nonlinear operations. Solving larger models requires a valid BARON license.
The BARON manual describes how to use BARON executables through BARON's own parser-reader of optimization models. Alternatively, the same executables can be accessed through the freely available MATLAB/BARON interface version 1.82 (27-October-2016) and the JuMP, Pyomo, and YALMIP modeling systems.
Examples of BARON input files are available for problems that are nonconvex nonlinear: nlp1, nlp2; mixed-integer linear: milp; mixed-integer nonlinear: minlp; separable concave or indefinite quadratic: scqp1, scqp2, iqp; and for miscellaneous applications: pooling, gear, design, robot. We also provide a large test set of (mixed-ineger) nonlinear programs.