POSLavu is a hosted point-of-sale system. The `poslavu` gem provides access to the API.

Posmoni suite

A comprehensive Ruby SDK for sending SMS, emails, and scheduling messages via the PossiNote API

International postal address formatting

postal_check judge service area.

To find out details like country, state, locality of postal code.

PostalMethods SOAP API library

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.

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