The pages contain a collection of applets designed for use in conjuction with the calculus courses at Georgia Tech. Above is a screen shot of one of the applets. This one is for experimenting on Newton's method in one dimension and finding basins of attraction. For example, the badge up above the graph gives the coordinates of the cursor. Further instructions on the use of these applets is provided on the individual pages containing them.
All code is copyrighted by the authors.
So academic use and freeware is fine.