MacTutor history of mathematics

A system consists of more than 100 HyperCard stacks amounting to about 18 Mb and about 2000 cards, running on any of the range of Apple Macintosh computers, but not, alas on PC's ; its content covers a wide range of mathematical topics, particularly strong in Geometry, Algebra (and in particular, Group Theory), Graph Theory, Number Theory and the History of Mathematics, including some stacks on Statistics, Matrices and Complex Analysis.