GEOPosCalc 

GEOPosCalc makes easy and simple a job normally tedious in other products, the conversion from geographic positions to UTM and vice versa.
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Zip Code Genie 

Zip Code Genie looks up and fills in address data (city, state, area code, etc.) automatically for you. Works with your existing word processing documents, spreadsheets, and database forms. Improves data entry accuracy, saves you keystrokes and time.
zip code data address data data entry