1)   Euro Calculator 3.5
Euro Calculator is a calculator and currency converter with internet agent that collects daily rates. Features include a spreadsheet interface and translucent skins. Calculator and euro conversion functionality never expire (freeware).
Euro Calculator, currency converter, skins, skin, translucent, translucency, transparent, transparency, calculator, spreadsheet,

 2)   SkinCalc 3.5
SkinCalc is a free calculator featuring skins and a spreadsheet interface. Skin effects include translucency and non-rectangular shapes. More than 100 skins are available from the sites listed at skincalc.com.
Calculator, skinnable calculator, skins, skin, translucent, translucency, transparent, transparency, spreadsheet, Excel,

 3)   WorldCalc 3.5
WorldCalc is a calculator and currency converter with daily exchange rate updates provided by Cloanto, a leader in currency services. Includes a spreadsheet interface and translucent skins. The unregistered version displays an advertising banner.
Currency calculator, currency converter, skins, skin, translucent, translucency, transparent, transparency, calculator, spreadsheet,