A Small Optical Analysis Program, SOAP, has been developed for the Commodore PET computer which is very versatile and easy to use. With this computer and optical program the user will be amazed how easily analysis of complex optical systems can be accomplished. There are three main section 'of the program available the to user; Lens Input and Output (including lens library), Lens Evaluation and Lens Raytrace including Gaussian beam propagation. This program can handle conics which can be deformed asphericallv, rotationally symmetric aspherics, and aspheric toroids and cylinders, all of which can be decentered in both the XZ and YZ planes and tilted in all three planes. The cost of the computer is less than half that of the HP98l5A, vet it is a true computer with the easily understood BASIC language. For the same investment as a HP9815A calculator one could obtain a PET computer, dual disk drive, printer and cassette. This system would constitute a complete business package useful to small businesses. The small business will find the combination of SOAP and the PET a combination that fits the bill.