Look up sales tax rates by zip code.

Similar interface to "send_file" of Rails.

Tool (wrapper) for compression and handling multiple type of archives (Zip, GZip, RAR, 7z)

API wrapper for postcodeapi.nu zipcode api

API Testing Done Right

For example, 8840 means 08840 and 5011234 means 00501-1234.

ruby wrapper gem to find the details using Google API

NLP related tools and classes

Convert to alphabet slug from japanese

you can search address by zipcode

Brazilian zipcode validations for ActiveRecord, integrated with correios-cep gem.

Gem to identify zip codes inside Japan

Resolve a postal (ZIP) code to a corresponding city or state.

Gem to search plants by zip code which grow well in a user's area.

Get NYC neighborhood names by ZIP code

This gem hooks into the SCM functionality of Capistrano 3.x in order to provide a more generic distribution strategy. Not only is it possible to deploy from a simple Git repository, but deployment of contents from Tar and ZIP files is also possible. It is even easy to create deployments based o...

Returns consumer propensity and ranking data based on income, zipcode, and age.

A Ruby wrapper for the zip/unzip command line tools(for UNIX) and 7zip(for Windows)

Lists information for Starbucks, Peet's, and Philz, including name address, and phone number, allows one to search for nearest locations by ZIP Code.

Generates a valid RANDOM US city, state, zipcode and coordinate pair.