CrystalWave provides probably the most powerful, user-friendly graphical user interface for the design photonic crystals available on the market today. You can use the mouse to lay out atoms in lattices, point and line defects, quickly and as easily as using a common drawing package; creating with ease even the largest of structures with tens of thousands of atoms. Numerical input allows fine control of lattice parameters and atom positions, shapes and sizes. You can also use the script system to fully automate the construction of even the most complex structures.