Optical modeling software is critical for the photonics industry when designing new products or optimizing existing products. We offer low cost programs for calculating optical properties of multilayer planar thin film stacks, multilayer conformal thin films on diffraction gratings, multilayer planar waveguides, general waveguides including strip and rib waveguides, astigmatic lens focusing, Mie scattering from multiple spherical shells, and optical fiber with multiple concentric cylindrical shells. Our software doesn't (yet) come with fancy GUI's or graphics. If you have your own graphics software, however, you will find that our software is easy to use and sometimes does calculations not even possible with the other commercially available software. Check out the example calculations that can be done with our software on this website.