Pi Filter Designer is a free, open-source software toolkit for designing and simulating passive filters with arbitrary order, cut-off frequency and filter type.
LAStools is a suite of open-source tools for the processing of airborne, mobile, and terrestrial laser scanning point clouds and for creating 3D terrain and surface models.
Logo Design Studio is a powerful and user-friendly graphic design software that enables users to easily create professional-looking logos for businesses, organizations, and other entities.