Zipcode Buddy

Zipcode Buddy is a handy reference that offers intuitive access to all 42,000+ US zip codes. Easily search by radius, city, state, area code and zip code. Fetch weather forecasts, Wikipedia articles, even display online maps. Additionally, Zipcode Buddy contains linked indices for each zip code's county, time zone, daylight savings time, as well as latitude and longitude. A wealth of intelligence ready to be put to work. Designed to provide maximum utility, everything you need when parsing zip codes is here in a single package, wrapped in an attractive interface. Top 5 features: Search zip codes by radius, Web integration, Export search results in 3 formats, Never requires installation, Free upgrades.

Limitations:

Limited functionality