PSOt - a particle swarm optimization toolbox for use with Matlab. Robust Particle Swarm toolbox implementing Trelea, Common, and Clerc types along with an alpha version of change detection. This toolbox is designed for researchers in Computational Intelligence as well as application developers, students, and classroom labs. It is robust enough that several papers have been developed using it but it is also in constant development and very easy to hack. Users of MATLAB’s Optimization Toolbox should feel right at home but even if you don’t use that toolbox this will be easy to figure. Extensive help is included.