Harry Whitfield
DMXdeCoder
FreeEffortless DMX512 Channel Conversion Widget
WindowsNetCalc - an RF Impedance Calculator
FreeEstablish radio frequency network design ideas.
WindowsDMXconverter
FreeDMXconverter: Simplify Your DMX Channel Calculations
WindowsDrawDemo
FreeUse a free-form drawing tool with various features.
WindowsSunrise Calculator
FreeDesktop Calculator for Sun and Moon Times
WindowsPlanimeter
FreeMeasure Areas of Closed Curves Accurately
WindowsPixel Scale
FreePixel Scale Delivers Versatile Desktop Rulings and Area Measurement
WindowsPlanimeter II
FreePlanimeter II: Accurate On-Screen Area Measurement Widget
Windows