The Scwarz-Christoffel Toolbox (SC Toolbox) is a collection of files for the interactive computation and visualization of Schwarz-Christoffel conformal maps in MATLAB version 4. The toolbox is a descendant of SCPACK, a Fortran package developed by L. N. Trefethen in the early 1980's [9]. However, the SC Toolbox has been written entirely in the MATLAB language, requires no programming by the user, and has many capabilities not in SCPACK.