Calc is arbitrary precision C-like arithmetic system that is a calculator, an algorithm prototyper and mathematical research tool. Calc comes with a rich set of builtin mathematical and programmatic functions.
JSynoptic renders information graphically. It can be used as a simple graph plotter, or as a complex run-time monitoring environment. The user sets up shapes (like plots) on graphical pages, and uses data sources (ex: ASCII file) to render information.