Harry Whitfield
DMXdeCoder
FreeEffortless DMX512 Channel Conversion Widget
WindowsNetCalc - an RF Impedance Calculator
FreeComprehensive RF Impedance Calculation Tool
WindowsDrawDemo
FreeInteractive Drawing Screensaver for Windows
WindowsPixel Scale
FreePixel Scale Delivers Versatile Desktop Rulings and Area Measurement
WindowsPlanimeter
FreeMeasure Areas of Closed Curves Accurately
WindowsDMXconverter
FreeDMXconverter: Simplify Your DMX Channel Calculations
WindowsSunrise Calculator
FreeDesktop Calculator for Sun and Moon Times
WindowsPlanimeter II
FreePlanimeter II: Accurate On-Screen Area Measurement Widget
Windows