EdenGraph is a graphing calculator built for Mac OS X 10.1 to 10.4
Note: this doesn't work quite right on the 2008 Mac Pro with Mac OS X 10.5.8 :'(
EdenGraph is a graphing calculator, built for Mac OS X, which is able to plot two-dimensional graphs using standard algebraic or trigonometric functions. Many mathematical packages only allow for static, rendered images of graphs, whereas EdenGraph lets the user dynamically shift, track, or magnify the current graph.
EdenGraph complements Mac OS X's methodology: the power of UNIX with an elegant, easy-to-use, and intuitive user interface. EdenGraph aims to provide simplicity and usability, while harnessing the power and legacy of UNIX.
EdenGraph won't break anyone's pocketbook since it is available free of charge as freeware.
Features
* Plot simple functions in 2D space
* Zoom in and out
* Easily shift the graph by clicking on the screen and dragging or using the keyboard arrow keys
* Track where the mouse is positioned
* Save as TIFF, PDF, or EPS
* Copy graph image to clipboard
* Add, save, and edit your favorite equations
* Print graphs
* Change the color of the graph, background, axes, and grid
* Check for new updates
* Universal Binary
New Features
* Now available as a Universal Binary for both Intel and PPC Macs.
* Several graphical and interface enhancements to the buttons and icons.
* Updated Help system.
* Minor problems fixed.
http://www.edenwaith.com/products/edengraph/