In complex analysis one cannot draw graphs of functions the usual way, as four dimensions would be necessary. Instead, one usually consider the functions as mappings, and study how they map different objects. I have developed a set of programs that visualize the behaviour of complex functions. The programs are made available on this page as Java applets. To play around with each program, just click on the Complex Functions Explorer in the menu to the left, or check out some of my Blaschke Software. If you have problems with the programs, first make sure that you have Java installed. If not, you can download it (you will need the Java Runtime Environment only).
Tips, comments, bug reports and other feedback is highly appreciated.