HelloEURO Currency Converter 

Euro conversion tool for Documents, Spreadsheets, Presentations and Databases. Highlight the figures you wish to convert, press a Hot-Key and they are converted to Euro. Works with Excel, Word, Access, PowerPoint and Clipboard handling applications.
euro conversion currency converter converter currency rounding calculator eurocalc spreadsheet word microsoft msoffice eurotool

Triangulator_for_PC 

This little program makes it really easy to do trigonometric calculations. Just enter any combination of three parameters (sides, angles or height) and hit the calc button. All the remaining angles, sides and height are instantly calculated!
triangulator sin cos tan radian angle trigonometrics