Dakota (Design Analysis Kit for Optimization and Terascale Applications) is a very comprehensive open-source library for optimization, uncertainty quantification, sensitivity analysis and calibration purposes. The effort started in 1994 by Sandia National Laboratories based in New Mexico. Dakota is released under GNU Lesser General Public License.

As it is stated in it's manual Dakota is the first generic optimization software that is available for wide range of engineering applications. Thanks to it's rich content it can be coupled with any simulation software via scripting.  Check out our Dakota-OpenFOAM and Dakota-SU2 tutorials.

Below is a snippet used for an input file for DAKOTA for one of our tutorials coupling OpenFOAM and DAKOTA.