K3-Tent is a software suite intended for designing tent structures. The software helps speed up the compilation of design documentation and improve the quality of manufacturing order preparation for any tent structure shape. The K3-Tent suite provides highly visual and effective tools for designers to work with surfaces of any complexity. In addition, K3-Tent significantly reduces the time required for finding the shape of the envelope, visualizing the final structure, marking a cutting line, and unfolding pieces. The K3-Tent suite is a further development of the FABRIC CAD System.