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