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.
This software is not reviewed yet.
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).