High Quality Content by WIKIPEDIA articles! SAPWIN (Symbolic Analysis Program for Windows) is proprietary a symbolic circuit simulator written in C++ for the Windows (95/98/ME/NT/2000) environment. Unlike more common numerical circuit simulators (such as SPICE), SAPWIN can generate analytical Laplace domain expressions for arbitrary network functions of linear analog circuits. The SAPWIN package also includes tools for schematic capture and graphic post-processing.