Utility to standardize/verify an address. Corrects errors in street addresses, including abbreviations and missing information and supplies ZIP Codes and ZIP Codes + 4

Save zip code data to CSV

Generate a zip file from array of files

ZipMoney Merchant API Initial build

Library for working with zip file in DSL-way

This library uses a GeoJolt.com API key to return all zip codes with a radius of the zip code passed to it.

Simple Client Library to connect to the Zipmark API

HttpZip is a gem to extract individual files from a remote ZIP archive, without the need to download the entire file.

Gem to validate zip codes and get city names. Currently only for DK, SE, GL and FO.

Non-blocking zip reading and writing for Ruby.

Zipfian distribution

Allows for zoning by zip codes

Importable asset zip plugin for rails.

Search by zip code.

Simple zip codes database for Poland

Convert Japanese zip code to coordinates.

Given your zip code and a darkskies API key, you'll be able to get some short term weather info bout your zip code.

Rails Engine that returns a US State code that a given zip code's sectional center facility resides in. It uses a database table to look up the record.

tool to handle zip file archived in aozorabunko

A library for looking up zip codes and their associated info.