Flex Projector is an interesting new program for anyone who has ever been interested in map projections. The program provides a great hands-on interface for understanding more about how map projections work as well as to create your very own. Alpha 0.32 was released 1 April 2008 for Linux, Mac and Windows by Bernhard Jenny, Oregon State University, and Tom Patterson, US National Park Service.
According to their website (http://www.flexprojector.com) Flex Projector is a freeware, cross-platform application for creating custom world map projections. The intuitive interface allows users to easily modify dozens of popular world map projections—the possibilities range from slight adjustments to making completely new projections. Flex Projector is intended as a tool for practicing mapmakers and students of cartography. It took a couple tries to get the shape files to show up in the map window, but once they did I was off and running. Very ingenious application. I think this will become standard material for every introduction to cartography class out there. Its well worth a look for all mapping professionals.