John D. Coryat - President of USNaviguide LLC.

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John Coryat and USNaviguide LLC has been a provider of quality custom software services to customers the world over for more than 18 years. We provide a broad range of custom programming and design services from custom and standardized polygon databases to web sites and hosting services. This page lists some of the significant accomplishments for John Coryat Systems: Significant Accomplishments of John Coryat Systems

USNaviguide LLC currently is specializing in cartographic web site programming, utilizing Perl, SQL and Apache on Linux based platforms.
Our latest product offering:

Mapping programs:

USPS Zip Code Boundary Map

Zip Code Boundary Maps for States, Counties and Places

NOAA Weather Radar Android Application

Site Links:


USNaviguide LLC

Examples Page

Other Interesting and Useful stuff:
Ten Rules for Winning in Eight Ball
PostgreSQL Statements of Interest

Author: John D. Coryat  
Last update: 08/2017
Boundary Maps with Google Maps API

Judy, The Cute Dog (and Friends)

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