Search addresses in Japan by postal code, and vice versa, by using AWS Athena. This gem can only work by using JRuby.

Send mass postal orders using a csv via Polish Post Office API, create and check for mass postal orders statuses via the API relay

A number of fully-tested clients for interacting with all of the available postcode anywhere services, including capture, cleansing, payment validation and email validation

Verify the existence of an email address.

Wrapper around the postcodeapi.nu API for resolving Dutch postal codes

Ruby wrapper for PostcodeSoftware's web SDK, see https://web.postcodesoftware.com/sdk

Provides really basic postcode validation (intended for eCommerce platforms).

A simple postcode validator based on ActiveModel and Unicode CLDR.

Postdata utilities

Poster is a tool that helps with repetitive tasks (like forum posting) automation.

The PostFinance Checkout SDK allows an easy interaction with the PostFinance Checkout web service.

Command Line Tool for PostfixAdmin

Postfix daemon

Export Prometheus statistics for a Postfix server

Access to Postfixman REST API

Postfix Status Line Log Parser implemented by C.

A command line utility for copying postgres databases. Wraps pg_backup and pg_restore in a Ruby wrapper.

Adding support for PostGIS types and clean PostGIS querying extensions to ActiveRecord

Harness the power of PostgreSQL when crafting JSON reponses

Use postgres' fulltext search with ease