UltimaCalc

The UltimaCalc application window is unobtrusive, moveable, and resizeable – giving you the freedom to leave it open all the time on your desktop for ready access.

Colors and font sizes are fully customizable, or you can set the UltimaCalc window to be transparent when not in use! It’s out of sight until you need to invoke the full power of UltimaCalc’s computational abilities.