Soft Matter Simulations Co Ltd. is a company that utilizes the results of research conducted at Kyoto University. We provide consulting services for the simulation of soft matter in general, mainly particle-dispersed systems, and sell and customize simulation software. In particle-dispersed systems, it is necessary to accurately capture not only the direct interactions between particles but also the indirect interactions through the surrounding fluid motion. KAPSEL, simulation software for particle-dispersed systems developed at Kyoto University, solves this problem by direct numerical simulations, in which fluid motion is computed numerically based on the Navier-Stokes equations. KAPSEL has been applied to various particle dispersion systems, such as prediction of particle dispersion and rheological properties, motion analysis of arbitrarily shaped particles, and electrophoresis of charged particles.