Zipkey 3.15e by Eric Isaacson Software. Reg.Fee: $30
allows instant access to any of the more than 43,000 zipcodes in its complete city-level directory of five-digit U.S. zip codes. In the non-resident mode, you can search by zip, by state and city, or by city only. In the resident pop-up mode, you can be in a word processor or mailing list program or database program, and when you enter a zip code, ZipKey will automatically insert the city name, state name or abbreviation, and any other fixed keystrokes you specify in any format you wish. The database can be loaded into DOS RAM, in which case ZipKey will take about 148k, or left on disk or put in EMS memory, in which case it will take only 19k of DOS RAM. It also provides the telephone area code for each of over 30,000 cities in its database. The zip code database has been extensively checked for accuracy and compressed to save space. Installation and use is very easy, the price is reasonable and it doesn't take much RAM. What's not to love?. Get program's ZIP file (DOS\DATABASE\ZIPKEY.ZIP) from the CD-ROM.