Screen Calculator is presently a fairly simple calculator that allows you to enter expressions in infix notation and see the results. In the near future, it will support named variables, scientific functions, graphics and maybe even programability. Developers may be interested in the source (released under the GPL), which contains some useful routines for parsing and displaying floating point numbers. (Note: This software is *developmental*. It may contain a few nasty bugs. Then again, it may not)