MapMaker is a Chip's Challenge program by Ruben Spaans. It generates a full map of a CC level that the user specifies, and also reveals invisible walls, the state of blue walls, items hidden under blocks, and the paths of specific monsters such as fireballs, pink balls, and gliders, drawn with lines corresponding to their colors.
MapMaker is not used too much today, due to AVIs and ChipCap, and Tile World's TWS function. However, the program is significant for being one of the first programs made for Chip's Challenge. Programs that may have been around longer are ChipEdit by John Elion and T-Chip, also by Ruben Spaans.