CCC is a Cascade Chart Creator. It draws cascade charts based on a list of activities, durations, dependencies etc (which you have to hand-type in at the moment, unfortunately). It produces a cascade chart as a drawfile, with scales, critical activities marked in grey and activities varying in width according to how many people they need. It was written to help with my A-level maths Decision and Discrete coursework. An example of its output (in a fairly unusual scenario) can be found here. At the moment it doesn't let you play with any options, but you can tweak the options in the file itself if you can find them. 

CCC requires the DrawGen module and the DGBasLib library to function